Optimizing video conferencing using contextual information

ABSTRACT

The present disclosure is directed toward systems and methods for optimizing video conferences. For instance, systems and methods described herein optimize both the transmission and display of one or more video conference data streams. Systems and methods described herein optimize the transmission and display of one or more video conference data streams by identifying a context associated with the one or more video conference data streams and optimizing the one or more video conference data streams based on the identified context.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. application Ser. No.17/341,126, filed Jun. 7, 2021, which is a continuation of U.S.application Ser. No. 16/863,524, filed Apr. 30, 2020, which issued asU.S. Pat. No. 11,032,513, which is a continuation of U.S. applicationSer. No. 16/127,174, filed Sep. 10, 2018, which issued as U.S. Pat. No.10,659,729, which is a continuation of U.S. application Ser. No.15/385,540, filed Dec. 20, 2016, which issued as U.S. Pat. No.10,075,672. Each of the aforementioned applications are herebyincorporated by reference in their entirety.

BACKGROUND

Video conferencing is an easy and convenient way for people tocommunicate despite being in different locations. For example,co-workers utilize video conferencing to coordinate projects acrossworksites, family members and friends utilize video conferencing to keepin touch across long distances, and so forth. Video conferences add anextra dimension of communication to what would otherwise be a standardtelephone call in that the participants can observe facial cues and bodylanguage.

Additionally, video conferences frequently include a contentpresentation with a participant video stream. For example, a videoconference enabled conference room may include two video screens; onefor a video feed of the remote participant, and the other for a visualpresentation. To illustrate, in a business meeting video conferencebetween two remote parties, the first video screen can display a videofeed showing the face of one participant, while the other video screencan display a spreadsheet of data or a slide presentation.

As video conferencing has become increasingly popular, a significantproblem has arisen in that display area is limited. One instance wherelimited display area is problematic is when a video conference includesmore than two remote participants. To illustrate, a video conference mayinclude a participant sitting at a desk in a first location, a group offive participants sitting in a conference room at a second location, andanother person working from home at a third location. In thisconfiguration, and using a conventional video conference system, theparticipant at the first location may see a first window including aview of the five participants at the second location, and secondequally-sized window including a view of the participant at the thirdlocation. It follows that the five participants in the first windowwould appear smaller and more distant than the participant in the secondwindow. This can lead to frustration when one of the five participantsin the first window is speaking, but is harder to see due to the reducedsize and clarity of the display within the first window.

Another instance where limited display area is particularly problematicis when a visual presentation is included as part of a video conference.For example, in video conferencing, display area is at a premium but isgenerally not utilized appropriately. To illustrate, a visualpresentation within a video conference may include presentation slideswith large text. Many conventional video conference systems dedicate anentire monitor to the visual presentation, while including any livevideo feeds (e.g., video feeds of conference participants) on a separatemonitor. This means that the separate monitor may be crowded withseveral video feeds that include several video conference participants,while an entire monitor is dedicated to a single presentation slide.This is typically not the most efficient use of display area and oftencauses communication confusion within the video conference that resultsin user frustration as important elements of the video conference arenot displayed with appropriate prominence.

Another problem with conventional video conference systems iseffectively managing data bandwidth. For example, some conventionalvideo conference systems can compress a video conferencing channel to bebroadcast at a lower data rate. Conventional video conference systems,however, typically compress the entire video conferencing channel suchthat everything displayed in the channel is transmitted with lessclarity. This is problematic when a video conferencing channel includesa person who is speaking or is otherwise important but is hard to seeclearly after the entire channel has been encoded or compressed.

Thus, there are several disadvantages with conventional videoconferencing systems.

SUMMARY

One or more embodiments described herein provide benefits and/or solveone or more of the foregoing or other problems in the art with systemsand methods that determine and use context associated with various videoconference channels from one or more video conference data streams tooptimize the presentation of video conference channels on one or moremonitor screens. For example, systems and methods described hereinperform a contextual analysis to identify one or more portions ofinterest within a video conference data stream. In one or moreembodiments, systems and methods described herein also preferentiallyencode or compress the identified portions of interest within the videoconference data stream to ensure an acceptable level of video qualitywithin the areas of interest. The systems and methods can also compressportions not included within the portions of interest at a lower levelof quality to aid in managing data bandwidth requirements for the videoconference data stream. Thus, one or more embodiments described hereinoptimize video conferences by selectively compressing portions of avideo conference data stream at different levels of quality based oncontextually identified portions of the video conference data stream.

As briefly mentioned above, one or more examples of the systems andmethods determine whether the contents of a video conference channelwithin a video conference data stream is a video channel that includesconference participants, or whether the video conference channel is apresentation channel that includes presentation content (e.g., slidepresentation). The systems and methods can then analyze conferenceparticipants in a video channel and/or analyze presentation contentcharacteristics in a presentation channel to optimize a display layoutof various video conference channels of a video conference. For example,the systems and methods can modify a display size, a display position,and/or a zoom or crop factor associated with each video conferencechannel of the video conference.

For instance, based on determining that a video conference data streamincludes a video channel of conference participants, the systems andmethods can analyze the video channel to identify persons of interestwithin one or more video conferencing channels. In one or moreembodiments, the systems and methods perform a facial recognitionanalysis on images within the video channel to determine a user identityassociated with a conference participant. The systems and methods canthen access user information associated with the determined useridentity to determine contextual information associated with theconference participant (e.g., job title, relationships between otherconference participants, and/or other social or employment relatedinformation). Based on the contextual information associated with eachconference participant, the systems and methods identify importantparticipants within the video conference (e.g., based on a score), andaccordingly, generate a display of the one or more video channels thatis optimized based on the identified important participants.

Furthermore, example embodiments of the systems and methods optimize thedisplay of one or more received video conference data streams basedanalyzing presentation content within a presentation channel of one ormore received video conference data streams. For example, in one or moreembodiments the systems and methods determine or identify one or morecontent characteristics within presentation content of a presentationchannel (e.g., type of presentation content, size of font, quantity ofwords). Using the determined content characteristics of the presentationcontent, the systems and methods optimize a display of the presentationchannel to efficiently and effectively present the presentation content(e.g., optimize the display size of the presentation channel to increasethe readability of the presentation content).

Additional features and advantages of the present application will beset forth in the description which follows, and in part will be obviousfrom the description, or may be learned by the practice of suchexemplary embodiments. The features and advantages of such embodimentsmay be realized and obtained by means of the instruments andcombinations particularly pointed out in the appended claims. These andother features will become more fully apparent from the followingdescription and appended claims, or may be learned by the practice ofsuch exemplary embodiments as set forth hereinafter.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to describe the manner in which the above-recited and otheradvantages and features can be obtained, a more particular descriptionof the aspects of one or more embodiments briefly described above willbe rendered by reference to specific embodiments thereof that areillustrated in the appended drawings. It should be noted that thefigures are not drawn to scale, and that elements of similar structureor function are generally represented by like reference numerals forillustrative purposes throughout the figures. Understanding that thesedrawings depict only typical embodiments and are not therefore to beconsidered to be limiting of scope, one or more embodiments will bedescribed and explained with additional specificity and detail throughthe use of the accompanying drawings in which:

FIG. 1 illustrates a schematic diagram of a video conferencing system inaccordance with one or more embodiments;

FIGS. 2A-2B illustrate examples of video conferencing displays inaccordance with one or more embodiments;

FIGS. 3A-3D illustrate an additional examples of video conferencingdisplays in accordance with one or more embodiments;

FIG. 4 illustrates a detailed schematic diagram of a video conferencingsystem in accordance with one or more embodiments;

FIG. 5 illustrates a flowchart of a series of acts in a method ofselectively compressing a video conference data stream in accordancewith one or more embodiments;

FIG. 6 illustrates a flowchart of a series of acts in a method ofoptimizing the display of one or more video conference data streams inaccordance with one or more embodiments;

FIG. 7 illustrates a block diagram of an exemplary computing device inaccordance with one or more embodiments;

FIG. 8 is an example network environment of a social networking systemin accordance with one or more embodiments; and

FIG. 9 illustrates a social graph in accordance with one or moreembodiments.

DETAILED DESCRIPTION

One or more embodiments described herein provide a video conferencingsystem for optimizing display capabilities of video conferences based onsocial context and presentation content characteristics of a videoconference. For example, example embodiments of the video conferencingsystem optimize a video conference data stream by identifying animportance of one or more portions of video content and selectivelycompressing the video conference data stream based on the identifiedimportance of the one or more portions. In addition to selectivelycompressing a video conference data stream, example embodiments of thevideo conference system can further optimize a display of multiple videoconference channels by modifying the position, size, zoom factor, cropfactor, and other display properties of the multiple video conferencechannels based on the determined social context and presentation contentcharacteristics associated with the multiple video conference channels.

In one or more embodiments, the video conferencing system identifiesareas of importance in a video conference data stream based ondetermining a social context of the video conference. In at least oneembodiment, the video conferencing system analyzes content within avideo conference data stream to determine a social context of a videoconference. For instance, the social context of a video conference is apurpose (e.g., social circumstance) that corresponds to a videoconference. Additionally, the video conferencing system may determinethe identity of participants within the video conference, theorganizations with which the participants are associated, and/or otheruser information to provide contextual insight regarding the videoconference. The video conferencing system then uses the determinedsocial context and participant identities to optimize the videoconference presentation.

In particular, and by way of illustration, in one or more embodiments,the video conferencing system, includes client-computing devices thatcan both send and receive video conference data streams. In one or moreembodiments, when capturing and sending a video conference data stream,the video conferencing system causes the client device to analyzecaptured video content to determine social context of the capturedvideo. For example, the video conference system can analyze the capturedvideo content and identify that the video content includes a conferenceroom with ten participants to determine that the video content indicatesa company meeting.

In addition, the video conferencing system can determine the identity ofthe ten participants, and based on the social context of the companymeeting, the video conferencing system can identify one or more“important” participants based on user information associated with theidentified ten participants. As used herein, the term “important” refersto the general concept of significant or relevant content of a videoconference (e.g., significant participants or relevant presentationcontent). The video conferencing system then lossily compresses thecaptured video so that the portions of the video content that includethe important participants are compressed at a higher quality rate thanthe compression rate used on portions of video content associated withparticipants that are not deemed important based on the social context.In at least one embodiment, the video conference system compresses oneor more portions of video content by selecting a higher amount ofquantization for that particular area of the image.

In at least one embodiment, the video conferencing system identifies oneor more “important” participants by first performing facial recognitionon captured video in order to determine each video conferenceparticipant's identity. In one or more embodiments, a video conferenceparticipant's identity includes one or more of the participant's name,address, social networking system identifier, employee identifier, andso forth. In one or more embodiments, the video conferencing systemidentifies a video conference participant by matching an image of theparticipant taken from the video conference data stream to a known imageof the participant (e.g., stored within an employee database or withinthe social networking system).

Based on determining participant identities, the video conferencingsystem accesses user information for each identified participant withinthe captured video content. In one or more embodiments, user informationincludes any type of information associated with an identified videoconference participant. For example, the video conferencing system canaccess user information including a participant's employment informationfrom human resource records maintained by the participant's employer.Additionally, the video conferencing system can access social networkingsystem information associated with the participant from a socialnetworking system. Social networking system information can include theparticipant's social networking system profile information, activityhistory, co-user information, relationships, and so forth.

Using the accessed user information associated with each identifiedparticipant, the video conferencing system determines the significanceor “importance” of each participant. For instance, the videoconferencing system can determine a video conference participant is“important” when the social context of the video conference (e.g.,company meeting) and user information associated with the participant(e.g., company title) indicates that the video conference participant islikely the most relevant or significant participant within the videoconference. For example, if the social context of a video conference isa sales presentation, the video conferencing system considers the personreceiving the sales presentation to be important. In another example, ifthe social context of a video conference is a team brainstormingmeeting, the video conferencing system can consider the team leader tobe important.

Based on the video conferencing system determining that at least one ofthe video conference participants in the captured video content isimportant, the video conferencing system causes the client device topreferentially compress or encode the video content to send within avideo conference data stream. For example, in one or more embodiments,the video conferencing system preferentially compresses video contentwith multiple compression rates resulting in higher and lower videoquality portions of video. Accordingly, in at least one embodiment, thevideo conferencing system causes the client device to lossily compressnon-important portions of captured video content while compressing otherportions of the captured video corresponding to the important videoconference participants at a higher quality compression rate (e.g.,resulting in higher video clarity).

In addition to selectively compressing video content within a videoconference data stream, the video conferencing system can cause a clientdevice that receives video conference data streams to generate anoptimized display layout. In one or more embodiments, the videoconferencing system can optimize a display of various video conferencechannels based on social context, as discussed above. For example, thevideo conference can determine a purpose of a video conference,participants of a video conference, important or significant rankings orscores associated with the various participants, as well as otherinformation. Based on the social context, the video conferencing systemcan generate a display layout that favors the display of importantparticipants.

In addition to determining social context associated with one or morevideo conference data streams, the video conferencing system can alsoanalyze presentation content (e.g., presentation slides, spreadsheets,digital media) to determine the most efficient and effective way todisplay the presentation content. For example, the video conferencingsystem can identify a presentation channel within a video conferencedata stream and determine the size of font within a slide presentation,the significance of information shown within a spreadsheet, or othercontent characteristics that indicate the significance of presentationcontent within a presentation channel of the video conference. Based onthe content characteristics of presentation content, the videoconferencing system can optimize a display of the presentation channelfor the video conference.

In one or more embodiments, the video conferencing system optimizes thedisplay of video conference channels based on the determined socialcontext and presentation content characteristics. For example, based onthe determined social context information, the video conference systemcan modify a display size of a video conference channel, providepresentation focus by zooming in on a particular portion, and/orreposition one or more display locations of one or more video conferencechannels. Accordingly, the optimized display layout presents one or morevideo conference channels in an intuitive manner that increases thecommunication effectiveness of the video conference by focusing onrelevant or significant portions and content of one or more videoconference channels.

In addition, the video conferencing system creates computationalefficiencies by optimizing the transmission and display of one or morevideo conference data streams. For example, the video conferencingsystem facilitates faster transmission speeds by selectively compressingnon-important portions of video content for use in one or more videoconference data streams. Additionally, the video conference systemincreases display efficiency and effectiveness by strategicallymaximizing the effectiveness of available display area of a monitorbased on favoring the display of important participants and contentwithin a video conference, and disfavoring the display of unimportantparticipants or irrelevant content.

FIG. 1 illustrates a schematic diagram of an example environment andimplementation of the video conferencing system 100. As shown in FIG. 1, the video conferencing system 100 is implemented acrossclient-computing devices 102 a, 102 b, 102 c, each operating an instanceof the context manager 108 a, 108 b, 108 c. Furthermore, eachclient-computing device 102 a, 102 b, 102 c is associated with at leastone camera 104 a, 104 b, 104 c and at least one display 106 a, 106 b,106 c. In one or more embodiments, the video conferencing system 100further includes a server 112 that includes a video conferencing manager114, which can communicate with a social networking system 116. In oneor more embodiments, the client-computing devices 102 a, 102 b, 102 cand the video conferencing manager 114 communicate via the network 110,which may include one or more networks and may use one or morecommunication platforms or technologies suitable for transmitting dataand/or communication signals. Although the example environmentillustrated in FIG. 1 includes three client-computing devices 102 a, 102b, 102 c in additional embodiments, the video conferencing system 100can include any number of client-computing devices communicativelycoupled via the network 110.

As will be described in more detail below, the context manager 108 a,108 b, 108 c as described with regard to FIG. 1 performs context andcontent analysis, selectively compresses one or more video conferencedata streams, and optimizes one or more displays. For each clientcomputing device, for example, client-computing device 102 a, thecontext manager 108 a can perform the various functions and methodsdescribed herein related to video captured at the client-computingdevice 102 a prior to sending a video conference data stream from theclient-computing device 102 a. In addition, or alternatively, theclient-computing device 102 a can perform the various functions andmethods described herein related to a video conference data streamprovided by other client-computing devices (e.g., 102 b, 102 c).Additionally, in one or more embodiments, the server 112 can perform thevarious functions and methods described herein. For example, in someembodiments, the preferential encoding systems and methods are performedon a client-computing device that transmits a video conferencing datastream, while the display optimizing systems and methods are performedon a client-computing device that receives a video conferencing datastream.

Notwithstanding the particular computing device that performs one ormore particular steps, FIGS. 2A-3D and the description that followsillustrate example embodiments of various functions, features, methods,and results of the context manager 108 a, 108 b, 108 c. For example, asshown in FIG. 2A, the client-computing device 102 a (as shown in FIG. 1) has display 106 a′ and display 106 a″. In one or more embodiments, thedisplays 106 a′, 106 a″ are computer monitors connected to a centralprocessing unit of the client-computing device 102 a. In additional oralternative embodiments, the displays 106 a′, 106 a″ can be televisions,projected displays, display windows on a single computer monitor, and soforth.

As mentioned above, a video conference can incorporate the use of one ormore video conference data streams. As used herein, a “video conferencedata stream” includes digital media data that is sent from one computingdevice to another computing device. For example, a video conference datastream can include video and/or audio data that is captured by a cameraand microphone and communicated during a video conference between twousers. In addition, a video conference data stream can include one ormore video conference channels. For example, a video conference datastream can include a first video channel that includes video and audiocontent of a participant in a video conference. Additionally, the videoconference data stream can include one or more presentation channelsthat include presentation content, such as a slide presentation,spreadsheets, monitor sharing, and/or other electronic documents thatcan be referenced during a video conference.

For example, as illustrated in FIG. 2A, the video conferencing system100 can display one or more video channels 202 a, 202 b in addition to apresentation channel 204. In one or more embodiments, the video channels202 a, 202 b include live video streams of video conferenceparticipants. For instance, the video channel 202 a includes a livevideo stream of the video conference participants who are utilizing theclient-computing device 102 b to participate in the video conference.Similarly, the video channel 202 b includes a live video stream of thevideo conference participant who is utilizing the client-computingdevice 102 c to participate in the video conference. Although thedisplay 106 a′ shows two video channels 202 a, 202 b, in additionalembodiments, the display 106 a′ can include fewer or additional videochannels.

Also shown in FIG. 2A, the video conferencing system 100 provides thepresentation channel 204 on the display 106 a″ of the client-computingdevice 102 a, the presentation channel 204 being broadcast from theclient-computing device 102 c. For instance, and as shown in FIG. 2A,the presentation channel 204 includes a presentation slide. Although thedisplay 106 a″ shows a single presentation channel 204, in additionalembodiments, the display 106 a″ can include additional presentationchannels. Additionally, although the video conferencing system 100displays all video channels 202 a, 202 b on the display 106 a′ and thepresentation channel 204 on the display 106 a″ of the client-computingdevice 102 a, in additional or alternative embodiments, the videoconferencing system 100 can display any combination of video channel andpresentation channel on any display of the client-computing device 102a.

As mentioned above, the video conferencing system 100 selectivelycompresses one or more video conference data streams based on socialcontext and content analysis. For example, the context manager 108 a,108 b, 108 c installed on the client-computing device 102 a, 102 b, 102c, respectively as shown in FIG. 1 , identifies one or more areas ofimportance in a broadcast video channel and compresses the broadcastvideo channel around the areas of importance. Thus, the video conferencesystem 100 broadcasts the areas of interest with greater clarity thanthe areas of non-interest.

With reference to FIG. 2A, the context manager 108 b of theclient-computing device 102 b can selectively compress the video channel202 a displayed on the display 106 a′ of the client-computing device 102a. Similarly, the context manager 108 c of the client-computing device102 c can selectively compress the video channel 202 b displayed on thedisplay 106 a′ of the client-computing device 102 a. In one or moreembodiments, the context manager installed on any client-computingdevice selectively compresses a video channel based on an analysis ofthe social context of the video channel, as well as on an analysis ofthe content of the video channel.

To illustrate, in order to analyze the social context of the videochannel 202 a, the context manager 108 b of the client-computing device102 b begins by performing image analysis on a still image taken fromthe video channel 202 a. For example, in one or more embodiments, thecontext manager 108 b extracts a still image from the video channel 202a on regular intervals (e.g., every 1 second, every 10 seconds, every 20seconds, every 60 seconds, every 2 minutes, etc.). In at least oneembodiment, the context manager 108 b extracts a still image from thevideo channel 202 a by extracting a single frame from the video streamcomprising the video channel 202 a. Alternatively, rather than capturinga still image on regular intervals, the context manager 108 b cancapture a still image from the video stream comprising the video channel202 a every time movement is detected within the video channel 202 a.

Once the context manager 108 b has extracted a still image from thevideo channel 202 a, the context manager 108 b analyzes the still imagefor areas of importance. In one or more embodiments, an area ofimportance can be a participant, a whiteboard, a television screen, acomputer monitor, etc. Accordingly, the context manager 108 b utilizesimage processing or computer vision to detect or otherwise recognizeshapes, objects, and/or colors. In one or more embodiments, the contextmanager 108 b further utilizes machine learning and neural networks toextrapolate from the recognized shapes and colors whether an area withina still image is a person, a piece of furniture, a wall, and so forth.

If the context manager 108 b determines that an area in the still imageis a participant, the context manager 108 b utilizes facial recognitionto identify the participant. For example, in one or more embodiments,the context manager 108 b identifies distinguishing features of theparticipant's face (e.g., distance between the eyes, width of the nose,depth of the eye sockets, shape of the cheekbones, length of the jawline, etc.) and seeks to match those features to a known image of theparticipant. In at least one embodiment, the context manager 108 b seeksto match the image of the participant in the still image to a knownimage of the participant from company human resources records, socialnetworking system information, internet searches, personnel databases,and so forth. The context manager 108 b determines that a match has beenfound when the context manager 108 b matches a number of distinguishingfeatures between the image of the participant in the still image and aknown image of the participant above a predetermined threshold amount.

Based upon the context manager 108 b having identified a participant inthe still image taken from the video channel 202 a, the context manager108 b next determines whether the identified participant is “important.”As discussed above, an identified participant is important when theparticipant is a likely focus of the video conference. For example, in avideo conference where all participants are employed by the samecompany, the company CEO is likely a focus of the video conference.

In order to determine whether an identified participant in the videochannel 202 a is important, the context manager 108 b accessesinformation associated with the video conference, information associatedwith the identified participant, and/or information associated with aparticipant that will receive the video channel (e.g., the participantassociated with the client computing device 108 b having monitors 106 a′and 106 a″ shown in FIG. 2A). For instance, the context manager 108 bcan determine a relationship of the identified participant with apredicted context (e.g., purpose) of the video conference (e.g., theidentified participant is a team leader of a team video conference).Additionally, the context manager 108 b can determine a relationship ofthe identified participant with the receiving participant (e.g., theidentified participant is the receiving participant's boss). Based onidentifying and determining contextual relationships between anidentified participant, the video conferencing system 100 canselectively compress a video conferencing data stream.

For example, in one or more embodiments, the context manager 108 baccesses metadata related to the video conference in order to determinewhether an identified participant is important. In one or moreembodiments, the video conferencing manager 114, as shown in FIG. 1 ,hosts the video conference in which the users of the client-computingdevice 102 a, the client-computing device 102 b, and theclient-computing device 102 c are all participating. In that case, thevideo conferencing manager 114 may store metadata related to the videoconference such as, but not limited to, the names and titles of thevideo conference participants, the locations of the video conferenceparticipants, the time and date of the video conference, the statedpurpose or title of the video conference (e.g., “Team BrainstormingMeeting”), the technical specifications of the video conference (e.g.,the required data bandwidth, the data transfer rate, etc.), and soforth.

Furthermore, in one or more embodiments, the context manager 108 baccesses information about the identified participant in order todetermine whether the identified participant is important. For example,in at least one embodiment, the context manager 108 b accesses companyorganizational information to determine an identified participant'semployment position and seniority within the company. Furthermore, inone embodiment, the context manager 108 b can also access the identifiedparticipant's calendar, email, and other data specific to the identifiedparticipant within either the video conferencing manager 114, the server112, or within a separate server accessed by the video conferencingmanager 114. For example, in one embodiment, the context manager 108 bmay consider an identified participant more important if his calendarindicates that he attends or is invited to a lot of meetings.

Additionally, in one or more embodiments, the context manager 108 baccesses social networking system information specific to the identifiedparticipant in order to determine whether the identified participant isimportant. For example, the context manager 108 b accesses socialnetworking system information including, but not limited to, theidentified participant's social networking system friends, theidentified participant's likes and comments, the identifiedparticipant's social networking system posts, the identifiedparticipant's clicks and scrolls within the social networking system,and so forth. In at least one embodiment, the context manager 108 baccesses social networking system information via the video conferencingmanager 114, as shown in FIG. 1 . In additional or alternativeembodiments, the context manager 108 b can access the social networkingsystem 116 directly in response to requesting login information from theuser of the client-computing device 102 b.

Furthermore, in at least one embodiment, the context manager 108 baccesses the social networking system 116 for information related to anyrelationships or a social proximity between two or more identifiedparticipants in a video conference data stream. For example, socialnetworking system information that indicates a relationship between twopeople can include both people indicating in their social networkingsystem accounts that they work for the same company. In another example,the two people may be social networking system friends, or they mayshare a number of social networking system friends in common.

Once the context manager 108 b has collected information related to anidentified participant shown in the video channel 202 a, the contextmanager 108 b utilizes the collected information to determine animportance score for the identified participant. Additionally, in one ormore embodiments, the context manager 108 b places more weight oncertain pieces of information. For example, in one embodiment, thecontext manager 108 b places more weight on employment information foran identified participant, when metadata for the video conferenceindicates the video conference is for work purposes (e.g., a sales teammeeting). In that case, the context manager 108 b will place more weighton information such as the identified participant's work title,employment seniority, income, etc. than on social networking systeminformation such as the identified participant's number of friends.

In additional or alternative embodiments, the context manager 108 b canweight information based on other criteria than the metadata associatedwith the video conference. For example, if the identified participanthas a very high number of social networking system friends, the contextmanager 108 b can determine that the identified participant is likelyimportant even if the identified participant's employment informationmay not explicitly indicate importance. In that case, the contextmanager 108 b may more heavily weight the social networking systeminformation associated with the identified participant.

With the identified participant's information appropriately weighted,the context manager 108 b next calculates a score for the identifiedparticipant that indicates the participant's level of importance. In oneor more embodiments, the context manager 108 b calculates an importancescore by simply adding together the weighted values associated with allthe collected information for the identified participant. In additionalor alternative embodiments, the context manager 108 b can calculate animportance score using a more complex algorithm. For example, thecontext manager 108 b can vary weights, types of information used, andother factors based on an identified relationship between a receivingparticipant and the identified participant.

The context manager 108 b calculates an importance score for everyidentified participant shown in the video channel 202 a. The resultingimportance score for the identified participant can be an integer fromzero to one-hundred, or a non-integer from zero to one, and indicatesthe importance of the identified participant. In one or moreembodiments, when a resulting importance score is above a predeterminedthreshold, the context manager 108 b determines that the identifiedparticipant is important. In one or more embodiments, it is possiblethat no conference participant has an importance score above thepredetermined threshold. In such a case, the context manager 108 b canuse a default system or method for compressing the video channel, oralternatively, the context manager 108 b may rank participant's byimportance score and compress the video channel based on theparticipants' respective importance to one another.

In at least one embodiment, the context manager 108 b further weights anidentified participant's importance score based on speech and bodylanguage analysis. For example, the context manager 108 b generallyconsiders a participant in a video conference to be more important ifthat participant is speaking. Similarly, the context manager 108 bgenerally considers a participant in a video conference to be moreimportant if that participant is moving, standing, or making gestures.In one or more embodiments, the context manager 108 b determines that anidentified participant is speaking by utilizing one or more microphones,and/or by utilizing image processing to recognize body movements andfacial gestures that indicate the participant is speaking (e.g., theparticipant's mouth is open, the participant's hands are moving, etc.).Along related lines, the context manager 108 b determines that anidentified participant is moving or making gestures by utilizing imageprocessing techniques.

As discussed above, the context manager 108 b also identifies otherareas of importance (e.g., a white board, a television screen, and soforth) within a still image taken from a video channel. For example, inone or more embodiments, the context manager 108 b utilizes imageprocessing techniques to determine that identified shapes within a stillimage are potential items of importance. The context manager 108 b thenscores each identified item based on a series of criteria to determineeach item's level of importance. For instance, if the still imageincludes a clock hanging on a wall, the context manager 108 b may notcalculate a high score for the clock, as the clock is likely not an itemof importance. If the still image includes a whiteboard, the contextmanager 108 b may calculate a higher score for the whiteboard as thewhite board may include writing that is important to the videoconference. For instance, the context manager 108 b can detect thewriting content on a whiteboard is changing and in response recognizethat the content on the whiteboard is changing, the context manager 108b can define the whiteboard as an important item.

Furthermore, if an identified item in the still image is a type ofdisplay (e.g., a whiteboard, a television, a computer screen, etc.) thecontext manager 108 b can also utilize optical character recognition todetermine what is being displayed. For example, the context manager 108b may utilize optical character recognition to determine that awhiteboard displays writing that includes phrases like, “ideas for nextquarter,” “improvements needed,” and “team goals.” If metadata for thevideo conference indicates that the purpose of the video conference is ateam planning meeting, the context manager 108 b can utilize machinelearning and other heuristics to determine that the writing on thewhiteboard is relevant to the meeting, and thus the whiteboard is anitem of importance and should be scored accordingly. Based the contextmanager 108 b determining a score for every identified item in the stillimage taken from the video channel 202 a, the context manager 108 bdetermines whether each identified item is important. In one or moreembodiments, and similar to an identified participant, the contextmanager 108 b determines that an identified item is important if thescore for the identified item is above a predetermined threshold.

After the context manager 108 b has identified the participants anditems of importance in the video channel 202 a, the context manager 108b selectively compresses the video channel 202 a around the participantsand items of importance. In one or more embodiments, as mentioned above,the video conferencing system 100 optimizes a video conference byselectively compressing portions of a broadcast video channel so as tosave data bandwidth and to speed up transmission of the video channel.Accordingly, in response to identifying participants and items ofimportance in the video channel 202 a, the context manager 108 b of theclient-computing device 102 b compresses all areas within the videochannel 202 a that do not contain a participant or item of importance.In at least one embodiment, the context manager 108 b compressesunimportant areas within the video channel 202 a using lossy encodingtechniques such that the important areas within the video channel 202 aare broadcast or transmitted with greater quality (e.g., greaterclarity).

To illustrate, FIG. 2B shows the video channel 202 a in whichparticipants 206 a-206 g sit around a table. In one or more embodiments,the context manager 108 b of the client-computing device 102 b utilizesimage processing and computer vision to determine that the presence ofseven people sitting around the conference room table. The contextmanager 108 b next utilizes facial recognition techniques to determinethe identity (e.g., a user identity) of each of the seven participantsshown in the video channel 202 a. For example, and as discussed above,an image of each participant is measured against known images of usersof the video conferencing system to find a match between a participantimage and a known image associated with a known user identity.

Based on determining a user identity of each participant, the contextmanager 108 b accesses data associated with each of the identified sevenparticipants from company servers, social networking systems, and soforth in order to determine the importance of each of the seven people.Finally, upon determining that one or more of the participants 206 d-206g have an importance score above a predetermined threshold, the contextmanager 108 b selectively compresses the one or more importantparticipants 206 a-206 c, as well as the conference table and the itemsthereon, such that the one or more important participants 206 d-206 gare transmitted with greater clarity at a higher data compression ratethan the conference table, non-important participants (e.g., thoseparticipants having an importance score below the threshold), and/orother portions of the video image.

For example, in one embodiment, the video conference displayed in thevideo channels 202 a, 202 b, and the presentation channel 204 on thedisplays 106 a′ and 106 a″ of the client-computing device 102 a includesparticipants who are conferencing for the purpose of a productdevelopment presentation. The participants displayed in the videochannel 202 a include some team members (e.g., participants 206 a-206c), as well as the company CEO (e.g., participant 206 d), two potentialcustomers (e.g., participants 206 e, 206 f), and the company's legalcounsel (e.g., participant 206 g). Accordingly, the context manager 108b utilizes the processes described above to determine that theparticipants 206 d-206 g are important and lossily encodes/compressesthe video channel 202 a such that the participants 206 d-206 g aretransmitted with greater clarity than the participants 206 a-206 c. Forexample, the context manager 108 b determines that the CEO (e.g., theparticipant 206 d) is important in light of his company title relativeto the company titles of the other people in the room, that thepotential customers (e.g., the participants 206 e, 206 f) are importantin light of their lack of company information as well as their highnumber of social networking system connections, and that the company'slegal counsel (e.g., the participant 206 g) is important in light of hiscompany title.

The processes described above with reference to the selectivecompression capabilities of the context manager 108 b can be performedby any context manager installed on a client-computing deviceparticipating in the video conference that is broadcasting ortransmitting a video conference data stream. For example, as shown inFIG. 2B, the context manager 108 c of the client-computing device 102 ctransmits the video channel 202 b displayed on the display 106 a′ of theclient-computing device 102 a. In the illustrative example, theparticipant displayed in the video channel 202 b includes a team memberwho is giving the presentation.

Accordingly, the context manager 108 c utilizes image processing andfacial recognition to identify the participant 206 h. The contextmanager 108 c further calculates the importance of the participant 206 husing the methods described above with reference to the context manager108 b. In one or more embodiments, the context manager 108 c may notcalculate a very high importance score for the participant 206 h inlight of the fact that the participant 206 h is a team member with nospecial title within the company who has a normal number of socialnetworking system connections. In at least one embodiment, however, thecontext manager 108 c further weights the importance score of theparticipant 206 h in light of a determination that the participant 206 his speaking and utilizing body gestures that indicate the participant206 h is giving a presentation. Thus, in light of the context manager108 c calculating an importance score for the participant 206 h that isabove a threshold amount, the context manager 108 c transmits the imageof the participant 206 h with no added compression.

The context manager 108 c further utilizes image processing to determinethe importance of the item 208, as shown in FIG. 2B. For example, in oneor more embodiments, the context manager 108 c identifies the item 208as a whiteboard easel. The context manager 108 c then determines thatthe item 208 is likely important after utilizing optical characterrecognition to identify the writing on the whiteboard. In at least oneembodiment, the context manager 108 c can use machine learning and otherheuristics to determine that the writing on the whiteboard (e.g., “NextQuarter's Projections”) is related to video conference metadata storedon the video conferencing manager 114 that indicates the purpose of thevideo conference is a product development presentation. Accordingly, inlight of the context manager 108 c calculating an importance score forthe item 208 that is above a threshold amount, the context manager 108 ctransmits the image of the item 208 with no compression or with a highquality compression ratio.

In one or more embodiments, a client-computing device can simultaneouslybroadcast and receive one or more video channels and one or morepresentation channels. For the purposes of the examples disclosedherein, however, client-computing device 102 b and client-computingdevice 102 c are broadcasting client-computing devices, while theclient-computing device 102 a is a receiving client-computing device.The selective compression capabilities of the video conferencing system100 are described with reference to FIGS. 2A and 2B as being performedby a broadcasting client-computing device. In additional or alternativeembodiments, a receiving client-computing device may also performselective compression on video channel.

As mentioned above, the video conferencing system 100 also optimizes thedisplay of one or more received video conference data streams. Thisfunctionality is discussed with reference to FIGS. 3A-3D. In one or moreembodiments, the video conferencing system 100 places a premium ondisplay space. Accordingly, in one or more embodiments, the videoconferencing system 100 can utilize context and content analysis to cropand resize a video conference data stream (e.g., one or more videochannels and/or one or more presentation channels), modify a zoom factor(e.g., zoom in or zoom out) of a video conference channel, modify a cropfactor (e.g., cropping out part of a video conference channel), andrearrange various video conference channel displays in order to optimizethe display space available on one or more monitors associated with aclient-computing device.

For example, as shown in FIG. 3A, the display 106 a′ of theclient-computing device 102 a display the video channels 202 a and 202 bin a split-screen configuration. Due to the aspect ratio of the camera104 b of the client-computing device 102 b, the video channel 202 a isrectangular. Accordingly, the client-computing device 102 a displays thevideo channel 202 a with mattes 210 a and 210 b along the top and bottomof the video channel 202 a in order to fill up the extra space.Similarly, the client-computing device 102 a displays the presentationchannel 204 with mattes 210 c and 210 d in order to fill up the extraspace due to the presentation channel 204 being square while the display106 a″ is rectangular. In one or more embodiments, the videoconferencing system 100 considers the use of the mattes 210 a-210 d tobe a waste of valuable display area on the client computing device 102a.

In some embodiments, the video conferencing system 100 can insert orremove mattes at either the client-computing device 102 a or theclient-computing device 102 b. In other words, the video conferencingsystem 100 can insert or remove mattes on either the transmitting clientor the receiving client. For example, if a transmitting client transmitsa 16:9 widescreen video, and the receiving client can only display a 4:3presentation, the video conferencing system 100 may add mattes to thedisplayed video at the receiving client in order to correct the aspectration of the video. Alternatively, if the transmitting client knows theaspect ratio of the display of the receiving client prior totransmission, the transmitting client may insert or remove mattes priorto transmission.

Additionally, as shown in FIG. 3A, the conference participants displayedin the video channel 202 a are small, while the conference participantdisplayed in the video channel 202 b is larger. Moreover, theclient-computing device 102 a utilizes all of the display 106 a″ todisplay the presentation channel 204, even though the presentationchannel 204 includes text that could be easily read at a smaller size.Accordingly, in at least one embodiment, the video conferencing system100 considers the arrangement of displays shown in FIG. 3A to beinefficient and not optimized. As such, the video conferencing system100 utilizes context and content analysis in order to optimize thedisplay of the video channels 202 a, 202 b and the presentation channel204.

For example, the context manager 108 a begins the display optimizationprocess by utilizing image processing and computer vision to identifyparticipants, objects, and items in the video channel 202 a (asdescribed above with reference to FIG. 2A). Next, the context manager108 a performs facial recognition on the identified participants andmatches the identified participants to company employment records,internet data, social networking system information, and so forth todetermine the identity of each participant within the video channels 202a and 202 b. Following this, the context manager 108 a utilizes machinelearning and/or neural networks in combination with informationcollected from company databases, internet searches, social networkingsystems, etc. to calculate a weighted importance score for eachidentified participant within the video channels 202 a and 202 b. Withthe calculated importance scores, the context manager 108 a can optimizethe display of the participant in the video channels 202 a and 202 b.

To illustrate, as shown in FIG. 3A, the video channel 202 a includes theparticipants 206 a-206 g, while the video channel 202 b includes theparticipant 206 h. After performing a context analysis, as describedabove, the context manager 108 a of the client-computing device 102 acan determine that the participants 206 a-206 c and 206 h are teammembers, while the participant 206 d is the company CEO, theparticipants 206 e-206 f are potential clients, and the participant 206g is the company legal counsel. Accordingly, from the identities andimportance of the participants 206 a-206 h, the context manager 108 acan determine that the displays 106 a′ and 106 a″ should be optimizedaround the participants 206 d-206 g.

For example, as shown in FIG. 3B, the context manager 108 a of theclient-computing device 102 a has optimized the displays 106 a′ and 106a″ based on context and content analysis. As mentioned above, thecontext manager 108 a can resize a video conferencing channel, split avideo conferencing channel, zoom in or out on a video channel, rearrangevideo channels, and so forth in order to present the user of theclient-computing device 102 a with the best view of the videoconference. Accordingly, as shown in FIG. 3B and in response todetermining the participants 206 d-206 g are the most important videoconference participants, the context manager 108 a can split the videochannel 202 a into two additional video channels and present a zoomed inview of the participant 206 d (e.g., the company CEO) in the videochannel 202 c and a zoomed in view of the participants 206 e-206 g(e.g., the potential clients and the company legal counsel) in the videochannel 202 d.

In one or more embodiments, the context manager 108 a can also analyzeinformation related to the user of the client-computing device 102 a toassist in optimizing one or more displays. For example, as discussedabove, the context manager 108 a generally calculates a higherimportance score for a video conference participant who is speaking.However, in certain scenarios, the context manager 108 a does notcalculate a higher importance score for a speaker based on informationrelated to a viewer of the video conference (i.e., the user of theclient-computing device 102 a).

For example, as shown in FIG. 3B, the context manager 108 a has notzoomed in on the participant 206 h, even though the participant 206 h islikely a speaker. In at least one embodiment, the context manager 108 amay not zoom in on a likely speaker in response to determining that thevideo conference viewer (i.e., the user of the client-computing device102 a) is likely more interested in watching other video conferenceparticipants. To illustrate, in the example shown in FIGS. 3A and 3B,the user of the client-computing device 102 a may be a team leader whois familiar with the presentation being given by the participant 206 hand who is more interested in watching the responses of the company CEO,the potential clients, and the company legal counsel (e.g., theparticipants 206 d-206 g).

In one or more embodiments, the context manager 108 a determines thatthe user of the client-computing device 102 a is less interested in avideo conference speaker by analyzing company organizational information(e.g., to identify employment relationships between the video conferenceparticipants), prior meeting information (e.g., to identify whether thepresent video conference topic has been previously discussed by thevideo conference participants), calendar information, emails and otherelectronic communications, and so forth. In at least one embodiment, thecontext manager 108 a accesses this information related to the user ofthe client-computing device 102 a in response to the user of theclient-computing device 102 a providing identifying information (e.g.,his name, his company logon information, etc.). Alternatively, thecontext manager 108 a can access information related to the user of theclient-computing device 102 a by querying video conferencing informationfrom the video conferencing manager 114 (e.g., video conferenceparticipants, participant locations, etc.).

In one or more embodiments, the context manager 108 a further optimizesthe displays 106 a′ and 106 a″ by cropping portions of one or more videoconferencing channel that are not valuable. For example, as shown inFIG. 3A, due to differences between transmitted and displayed aspectratios, the video channel 202 a and the presentation channel 204 includethe mattes 210 a-210 d, respectively. In at least one embodiment, thecontext manager 108 a identifies the mattes 210 a-210 d using imageprocessing techniques (e.g., that recognize the shape, color, andposition of the mattes 210 a-210 d), and crops the mattes 210 a-210 dfrom the video channel 202 a and the presentation channel 204. Inadditional embodiments, the context manager 108 a also crops backgroundelements (e.g., a wall, a window, a table top, etc.) that are notimportant participants or items. Furthermore, after cropping the mattes210 a-210 d and other various background elements, the context manager108 a can zoom in and reposition the video conference data stream, suchthat important people or items are the focus of the video conferencedata stream. Thus, valuable display area in the displays 106 a′ and 106a″ is not wasted on elements (e.g., mattes, walls, windows, etc.), whichadd nothing to the video conference.

As mentioned above, the context manager 108 a also optimizes thedisplays 106 a′ and 106 a″ by resizing and rearranging video conferencedata streams. For example, as shown in FIG. 3B, the context manager 108a has resized and rearranged the presentation channel 204 in response toperforming content analysis on the presentation channel 204. Toillustrate, the context manager 108 a performs a content analysis byutilizing image processing, optical character recognition, fontrecognition, text-size recognition, and so forth to determine thecontent and the readability of the presentation channel 204. In responseto determining that the content of the presentation channel 204 islikely important (e.g., the content includes many words, bullet points,keywords, highlights, etc.), the context manager 108 a can resize thepresentation channel 204 such that it is larger and easier to read.Similarly, in response to determining that the content of thepresentation channel 204 is hard to see (e.g., the font is not heavilyweighted, the text-size is small relative to the size of the display 106a″, etc.), the context manager 108 a can resize the presentation channel204 such that it is larger and easier to read.

Conversely, in response to determining that the content of thepresentation channel 204 is likely not important (e.g., the contentincludes few words, the content includes no keywords, etc.), the contextmanager 108 a can resize the presentation channel 204 such that it issmaller and takes up less space within the displays 106 a′ and 106 a″.Similarly, in response to determining that the content of thepresentation channel 204 is easy to see (e.g., the font is bold, thetext-size is large relative to the size of the display 106 a″, etc.),the context manager 108 a can resize the presentation channel 204 suchthat it is smaller and takes up less space within the displays 106 a′and 106 a″. In one or more embodiments, the context manager 108 adetermines the importance or non-importance of the presentation channel204 by utilizing machine learning to calculate a weighted score based onthe contents of the presentation channel 204.

To illustrate, as shown in FIG. 3A, the presentation channel 204includes a display slide. In one or more embodiments, the contextmanager 108 a analyzes the presentation channel 204 to determine thatthe display slide includes few words, large text size, no bullet points,and an easily readable font. Accordingly, the context manager 108 a cancalculate a weighted score for the presentation channel 204 thatindicates that the contents of the presentation channel 204 are likelynot important. In response to this determination, the context manager108 a next determines whether another video conference data stream hasan importance score that is higher than the score for the presentationchannel 204. If any other video conference data stream, or portion of avideo conference data stream has an importance score that is higher thanthe score for the presentation channel 204, the context manager 108 arearranges the display of the video conference data streams such thatthe most important channels have the most display area.

For example, as shown in FIG. 3B, in response to determining that theparticipants 206 e-206 g have high importance scores compared to a lowimportance score calculated for the presentation channel 204, thecontext manager 108 a rearranges the display of the presentation channel204 and the video channels 202 a-202 d. In one or more embodiments, thecontext manager 108 a rearranges the video conference data streams suchthat the greatest amount of display space is assigned to the videoconference data stream with the highest importance score. As illustratedin FIG. 3B, in response to determining that the video channel 202 d hasthe highest importance score, the context manager 108 a replaces thepresentation channel 204 with the video channel 202 d within the display106 a″ of the client-computing device 102 a.

In one or more embodiments, the context manager 108 a also arrangesequally sized displays according to importance score. For example, asshown in FIG. 3B, the video channels 202 a, 202 b, and 202 c, and thepresentation channel 204 may all have the different importance scores.Despite this, the display 106 a′ may not be capable of being split intoadditional or differently sized display areas. Accordingly, the contextmanager 108 a can arrange the video channels 202 a-202 c and thepresentation channel 204 in a left-to-right, top-to-bottom manner basedon descending importance scores. For instance, the video channel 202 amay have the highest importance score out of the video channels 202a-202 c and the presentation channel 204. Accordingly, the contextmanager 108 a places the video channel 202 a in the top-right corner ofthe display 106 a′ of the client-computing device 102 a.

As mentioned above, the context manager 108 a captures a still imagefrom every video conference data stream at regular intervals during avideo conference. In one or more embodiments, the context manager 108 aperforms a context and/or content analysis on a video conference datastream each time a still image is captured. Accordingly, in at least oneembodiment, each time the context manager 108 a captures a still imagefrom a video conference data stream, the context manager 108 a can zoomin or out on the video conference data stream, split or consolidate thevideo conference data stream, rearrange the display of the videoconference data stream, and so forth.

In some embodiments, the context manager 108 a determines the frequencywith which still images are captured based on the amount of activitydisplayed within the video conference data streams. For example, if avideo conference participant is giving a presentation while standing ata white board, the context manager 108 a may capture still images of theassociated video conference data stream with greater frequency. If avideo conference participant is simply sitting at a desk, the contextmanager 108 a may capture still images less often. Alternatively, in atleast one embodiment, a user of the client-computing device 102 a candefine (e.g., via a user settings graphical user interface associatedwith the context manager 108 a) the frequency with which still imagesare captured via one or more user settings.

To illustrate, the context manager 108 a can determine that the contentsof the presentation channel 204 have changed in response to capturing anew still image of the presentation change 204. For example, and asshown between the FIGS. 3B and 3C, the contents of the presentationchannel 204 have changed from a title slide (i.e., “Recent MarketingTrends”) in FIG. 3B, to a slide displaying a spreadsheet in FIG. 3C. Inresponse to determining that the contents of the presentation channel204 have changed, the context manager 108 a again analyzes the contentsof the presentation channel 204 in order to calculate a new importancescore for the presentation channel 204.

For example, the context manager 108 a can analyze the contents of thepresentation channel 204 to determine that the presentation channel 204now displays a spreadsheet (e.g., based on the presence of grid lines),and that the spreadsheet is likely hard to read (e.g., based on the textsize relative to the display area). Accordingly, in light of thediminished readability of the presentation channel 204, the contextmanager 108 a may calculate a higher importance score for thepresentation channel 204. In one or more embodiments, the contextmanager 108 a then rearranges the various video conference data streamsbased on the newly calculated importance score for the presentationchannel 204. For instance, as shown in FIG. 3D, the context manager 108a has switched the display locations of the presentation channel 204 andthe video channel 202 d, such that the contents of the presentationchannel 204 are enlarged and easier to read on the display 106 a″ of theclient-computing device 102 a.

FIG. 4 illustrates a schematic diagram illustrating an exampleembodiment of the video conferencing system 100. As shown in FIG. 4 ,the video conferencing system 100 may include various components forperforming the processes and features described herein. For example, asshown in FIG. 4 , the video conferencing system 100 may include, but isnot limited to, client-computing devices 102 a, 102 b, at least oneserver 112 hosting a video conferencing manager 114, and a socialnetworking system 116. In one or more embodiments, each client-computingdevice 102 a, 102 b includes at least one camera 104 a, 104 b, at leastone display 106 a, 106 b, and a context manager 108 a, 108 b. In one ormore embodiments, the context manager 104 a, 104 b includes an imageanalyzer 408 a, 408 b, an importance engine 410 a, 410 b, a videoencoder 412 a, 412 b, a display manager 414 a, 414 b, and a data storage416 a, 416 b including video conference data stream data 418 a, 418 b,and display data 420 a, 420 b.

The client-computing devices 102 a, 102 b and the server 112 cancommunicate via the network 110, which may include one or more networksand may use one or more communication platforms or technologies suitablefor transmitting data and/or communication signals. In one or moreembodiments, the network 110 includes the Internet or World Wide Web.The network 110, however, can include various other types of networkingthat use various communication technologies and protocols, such as acorporate intranet, a virtual private network (VPN), a local areanetwork (LAN), a wireless local network (WLAN), a cellular network, awide area network (WAN), a metropolitan area network (MAN), or acombination of two or more such networks. Although FIG. 4 illustrates aparticular arrangement of the client-computing devices 102 a, 102 b, theserver 112, and the network 110, various additional arrangements arepossible. For example, the client-computing devices 102 a, 102 b maydirectly communication with the server 112, bypassing the network 110.Additional details relating to the network 110 are explained below withreference to FIG. 8 .

While the components of the client-computing device 102 a and theclient-computing device 102 b appear identical, it will be understoodthat the video conferencing system 100 may operate on a combination ofboth the client-computing device 102 a and the client-computing device102 b, while in other examples, the video conferencing system 100 mayonly operate only on the client-computing device 102 a, oralternatively, only on the client-computing device 102 b. For example,as will be described in further detail below, the display optimizationfeatures of the video conferencing system 100 may be utilized by boththe client-computing device 102 a and the client-computing device 102 b.Alternatively, the compression features of the video conferencing system100 may only be utilized by the client-computing device 102 a or theclient-computing device 102 b, depending on which client device issending a video stream.

As mentioned above, the server 112 includes the video conferencingmanager 114. In one or more embodiments, the video conferencing manager114 hosts and otherwise manages video conferences. For example, in atleast one embodiment, the video conferencing manager 114 accepts userinput to configure a video conference (e.g., via various user inputsthat allow a user to enter time and date, participants, locations,router information, and so forth). In response to receiving videoconference configurations, the video conferencing manager 114establishes a video conference and hosts the established videoconference. In one or more embodiments, the video conferencing manager114 hosts a video conference by accepting one or more connections fromclient-computing devices 102 a, 102 b either directly or via the network110.

In at least one embodiment, the video conferencing manager 114 accessesthe social networking system 116. As mentioned above, the videoconferencing manager 114 provides social networking system informationto one or more of the context managers 108 a, 108 b for the purposes ofcontext analysis. Accordingly, the social networking system 116 includesa social graph 402 for representing a plurality of users, actions, andconcepts. In one or more embodiments, the social graph includes nodeinformation 404 and edge information 406. Node information 404 of thesocial graph 402 stores node information including, for example, nodesfor users and nodes for repositories. Edge information 406 of the socialgraph 402 stores edge information including relationships between nodesand/or actions occurring within the social networking system 116.Further details regarding the social networking system 116, the socialgraph 402, edges, and nodes is presented below with respect to FIG. 9 .

The server 112, the video conferencing manager 114, and the socialnetworking system 116 can be implemented using a computing deviceincluding at least one processor executing instructions that cause thevideo conferencing system 100 to perform the processes described herein.In some embodiments, the video conference manager 114 and the socialnetworking system 116 can be implemented by a single server 112, oracross multiple server devices. Additionally, or alternatively, acombination of one or more server devices and one or moreclient-computing devices can implement the components of the socialnetworking system 116 and/or the video conferencing manager 114.Furthermore, in one embodiment, the components illustrated in FIG. 4 cancomprise hardware, such as a special-purpose processing device toperform a certain function. Additionally, or alternatively, thecomponents illustrated in FIG. 4 can comprise a combination ofcomputer-executable instructions and hardware.

The client-computing devices 102 a, 102 b may include any one of varioustypes of computing devices. For example, the client-computing devices102 a, 102 b can include a mobile device such as a mobile telephone, asmartphone, a personal digital assistant, a tablet, a laptop, a smartwearable, or a non-mobile device such as a desktop, a server, and/oranother type of computing device. Additional details with respect to theclient-computing device are discussed below with respect to FIG. 7 .

As shown in FIG. 4 , the client-computing devices 102 a, 102 b includecameras 104 a, 104 b, respectively. In one or more embodiments, eachcamera 104 a, 104 b represents one or more recording devices capable ofcapturing digital photographs, digital videos, and/or digital sound. Inat least one embodiment, the cameras 104 a, 104 b may be mounted to adisplay or may be capable of standing alone. Furthermore, in someembodiments, the cameras 104 a, 104 b include multiple aspects such as,but not limited to, swiveling, zooming in, zooming out, panning,tilting, cropping, and sound-based triangulation. Also as shown in FIG.4 , the client-computing devices 102 a, 102 b include the displays 106a, 106 b. In one or more embodiments, each display 106 a, 106 b includesone or more display devices such as, but not limited to, televisions,monitors, tablets, smart phones, smart wearables, projectors, and soforth. In one or more embodiments, the cameras 104 a, 104 b and thedisplays 106 a, 106 b are housed as part of the client-computing devices102 a, 102 b (e.g., as with a laptop). In alternative embodiments, thecameras 104 a, 104 b and the displays 106 a, 106 b are connected,wirelessly or otherwise, to the client-computing devices 102 a, 102 b(e.g., as with a conference room).

In an embodiment that includes more than one camera associated with theclient-computing device 102 a and/or the client-computing device 102 b,the video conference system 100 can select between the more than onecameras based on social context. For example, if the client-computingdevice 102 a includes three cameras (e.g., positioned around aconference room), the video conference system 100 can select a videostream from one of the three cameras to transmit to the video conferencemanager 114 based on the social context of the video conference and theimportant person or thing that is captured by that video stream. Toillustrate, the video conference system 100 may transmit video streamfrom one of the three cameras that is pointed at a customer when thesocial context of the video conference is a sales pitch meeting that hasbeen organized in an attempt to sell a product to that customer.

As mentioned above, the client-computing device 102 a, 102 b includes acontext manager 108 a, 108 b. In one or more embodiments, the contextmanager 108 a, 108 b optimizes the broadcast and display of one or morevideo conference data streams. In one or more embodiments, the contextmanager 108 a, 108 b is a native application installed on theclient-computing device 102 a, 102 b. For example, the context manager108 a, 108 b may be a mobile application that installs and runs on amobile device, such as a smart phone, a tablet, etc. Alternatively, thecontext manager 108 a, 108 b can be a desktop application, widget, orother form of a native computer program. Alternatively, the contextmanager 108 a, 108 b may be a remote application accessed by theclient-computing device 102 a, 102 b. For example, the context manager108 a, 108 b may be a web application that is executed within a webbrowser of the client-computing device 102 a, 102 b.

As mentioned above, and as illustrated in FIG. 4 , the context manager108 a, 108 b includes an image analyzer 408 a, 408 b. In one or moreembodiments, the image analyzer 408 a, 408 b gathers image informationand performs context and content analysis in order to identify importantareas within an image. In at least one embodiment, the image analyzer408 a, 408 b also captures the still images from one or more videoconferencing channels at regular intervals upon which the context andcontent analysis are performed.

In one or more embodiments, the image analyzer 408 a, 408 b begins theprocess of analyzing an image by analyzing colors and edges within theimage to identify shapes. The image analyzer 408 a, 408 b then utilizescomputer vision and machine learning to determine a likelihood that aparticular shape is a participant, a table, a wall, etc. If thelikelihood is above a predetermined threshold, the image analyzer 408 a,408 b identifies a particular shape as a participant, and so forth.

In response to identifying a participant within an image, the imageanalyzer 408 a, 408 b continues the context analysis associated with theimage by utilizing computer vision to perform facial recognition on theidentified participant. In one or more embodiments, and in order toidentify the participant, the image analyzer 408 a, 408 b matchesvarious points within the participant's face to images of identifiedparticipants taken from employment records, Internet searches, socialnetworking system information, metadata associated with the videoconference, etc. In at least one embodiment, the image analyzer 408 a,408 b repeats this process until an identity is determined for everyparticipant in a still image taken from a video conference data stream.In one or more embodiments, the image analyzer 408 a, 408 b onlyutilizes social networking system information to assist in facialrecognition only when permitted by the privacy settings associated withthe identified participant.

In order to perform a content analysis, the image analyzer 408 a, 408 butilizes computer vision and other identification techniques to identifyevery object within a still image taken from a video conference datastream that is not a participant. For example, in one or moreembodiments, a still image likely includes items such as papers, walls,windows, chairs, tables, computers, whiteboards, and so forth. In somecases, these items may be important (e.g., such as a white board withinformation written on it), in other cases these items may not beimportant (e.g., such as a black wall behind a video conferenceparticipant). Accordingly, the image analyzer 408 a, 408 b determinesthat an identified shape is a particular item by attempting to match theidentified shape to a known item. In one or more embodiments, the imageanalyzer 408 a, 408 b makes this determination based on databases ofknown items, Internet searches, machine learning, computer vision, andso forth.

In at least one embodiment, the image analyzer 408 a, 408 b alsoutilizes computer vision, optical character recognition, and machinelearning in connection with one or more presentation channels todetermine the contents of the presentation channel. For example, theimage analyzer 408 a, 408 b can determine whether a presentation channelincludes a slide, a document, a spreadsheet, multimedia, and so forth.Additionally, in one or more embodiments, the image analyzer 408 a, 408b also determines other features of the contents of a presentationchannel, such as font size, font colors, formatting, and so forth.

In one or more embodiments, the image analyzer 408 a, 408 b alsoutilizes computer vision, machine learning, and so forth to identifyblank space within a still image taken from a video conference datastream. For example, in one or more embodiments, a video conference datastream may include only video conference participants in front of asolid background. In at least one embodiment, the context manager 108 a,108 b may crop out unused space in a video conference data stream tooptimize a display. Accordingly, the image analyzer 408 a, 408 bearmarks this unused space as an area that could potentially later beremoved. In one or more embodiments, the image analyzer 408 a, 408 bidentifies blank or unused space by identifying a single color orrepeating pattern (e.g., such as with a wall that has a patterned wallpaper covering it), and determining what percentage of the still imageis taken up by the single color or repeating pattern. If the percentageis over a threshold amount, the image analyzer 408 a, 408 b determinesthat the area comprising the single color or repeating pattern is likelyblank space that can potentially be later cropped.

With all participants and items identified within a still image, theimage analyzer 408 a, 408 b can also determine a context of the stillimage. For example, the image analyzer 408 a, 408 b can determine if aparticular still image depicts a team meeting, a sales pitch, aconversation between family members, and so forth. In one or moreembodiments, the image analyzer 408 a, 408 b determines a context of thestill image by querying metadata associated with the video conferencefrom which the still image is taken from the video conference manager114. As mentioned above, the video conference manager 114 maintainsmetadata related to a video conference that includes the title of thevideo conference, the participants in the video conference, thetechnical requirements of the video conference, and so forth.

In addition to video conference metadata, the image analyzer 408 a, 408b determines a context of video conference by querying companyinformation associated with one or more of the video conferenceparticipants. For example, the image analyzer 408 a, 408 b can queryparticipants' calendars to identify a title of a meeting occurring atthe time during which the video conference is live. The image analyzer408 a, 408 b can also access events one or more of the participants haveindicated interest in via the social networking system 116. Furthermore,in at least one embodiment, the image analyzer 408 a, 408 b can utilizesemantic analysis on audio data associated with one or more videochannels to determine a purpose or context of a video conference. In oneor more embodiments, regardless of the data upon which the imageanalyzer 408 a, 408 b bases its determination, the image analyzer 408 a,408 b utilizes machine learning to determine the context of the videoconference.

As shown in FIG. 4 , and as mentioned above, the context manager 108 a,108 b also includes an importance engine 410 a, 410 b. In one or moreembodiments, the importance engine 410 a, 410 b utilizes the context andcontents of a video conference to identify important areas within astill image taken from a video conference data stream (i.e., importantpeople or important items), and to rank the importance of two or morevideo conference data streams. For example, the importance engine 410 a,410 b identifies important areas within a still image by calculating animportance score for every identified participant and item within thestill image. In at least one embodiment, the importance engine 410 a,410 b then determines that an identified participant or item is“important” when its importance score is above a predeterminedthreshold.

In one or more embodiments, the importance engine 410 a, 410 b begins bycalculating importance scores for each identified participant in a videoconference data stream. As discussed above, the image analyzer 408 a,408 b determines an identity (e.g., a name and other identifyinginformation) for each participant in a still image taken from a videoconference data stream. With the participant's identity, the importanceengine 410 a, 410 b utilizes neural networks and/or machine learning tocalculate an importance score for the participant in light of thecontext of the video conference. In one or more embodiments, theimportance score is based on information obtained from a company serversuch as the participant's employment (e.g., a company CEO has a higherscore than a team leader, a team leader has a higher score than a teammember, etc.), the participant's seniority in his employment, theparticipant's income, the participant's number of subordinates, theparticipant's position within the company's organizational chart, etc.In at least one embodiment, the importance engine 410 a, 410 b assigns avalue to each piece of information related to the participant, such thatthe participant's resulting importance score is a sum of the valuesassigned by the importance engine 410 a, 410 b.

Additionally, the importance score is based on social informationobtained from the social networking system 116. In one or moreembodiments, the importance engine 410 a, 410 b calculates aparticipant's importance score based on the participant's number offriends (e.g., a higher number of friends indicates more importance),how often the participant posts to the social networking system, anumber of times the participant's posts are liked by other socialnetworking system users, and a number of times the participant's postsare shared by other social networking system users. The importanceengine 410 a, 410 b can further consider additional social networkingsystem activity associated with the participant in calculating theparticipant's importance score. As with the participant's employmentinformation, the importance engine 410 a, 410 b assigns a value to eachpiece of social networking system information associated with theparticipant.

In one or more embodiments, the importance engine 410 a, 410 b places aheavier weight on certain information associated with the participant incalculating the participant's importance score. For example, if all theidentified people in a video conference work for the same company, theimportance engine 410 a, 410 b may add extra weight to employmentinformation. Alternatively, if only some of the identified people in avideo conference work for the same company, the importance engine 410 a,410 b may add extra weight to social networking system information.

Once the importance engine 410 a, 410 b has calculated an importancescore for each participant identified within a video conference datastream, the importance engine 410 a, 410 b determines whether eachidentified participant is “important.” For example, in at least oneembodiment, the importance engine 410 a, 410 b determines that anidentified participant is important if the participant's importancescore is above a predetermined threshold. In one or more embodiments,the predetermined threshold is simply a number (e.g., for scores between0 and 100, the predetermined threshold is 80), or may be a toppercentage (e.g., the top ten percent of scores), or may be a ranking(e.g., if there are four participants shown in a video conference datastream, the threshold is the top two participants), and so forth. Theimportance engine 410 a, 410 b marks all identified participants in avideo conference data stream with importance scores above thepredetermined threshold to be important.

Next, the importance engine 410 a, 410 b calculates an importance scorefor all other items displayed within a video conference data stream. Asdiscussed above, a video conference data stream may include items (e.g.,displays, white boards, etc.) in addition to people. In one or moreembodiments, the importance engine 410 a, 410 b can optimize a videoconference data stream based on one or more important items. Forexample, in response to the image analyzer 408 a, 408 b determining thata video conference data stream shows a white board with writing on it,the importance engine 410 a, 410 b calculate an importance score for thewhite board. If the calculated importance score is above a predeterminedthreshold, the importance engine 410 a, 410 b will mark the white boardas important.

In one or more embodiments, the importance engine 410 a, 410 b utilizesmachine learning and/or neural networks to calculate an importance scorefor an item. For example, the importance score for an item is based onthe item's size (e.g., larger items are more important), the item'slocation (e.g., items closer to video conference participants are moreimportant), writing associated with the item (e.g., if an item haswriting on it, as with a whiteboard, the item is more important), thecontents of any writing associated with the item (e.g., if the writingis relevant to the purpose of the video conference, the item is moreimportant), and the amount of blank space associated with the item(e.g., more blank space indicates the item is less important). In one ormore embodiments, the important engine 410 a, 410 b determines whetherthe contents of any writing associated with the item is relevant basedon natural language processing. In at least one embodiment, theimportance engine 410 a, 410 b can also assign extra weight to certainpieces of information associated with an item, as described above.

Once the importance engine 410 a, 410 b has calculated an importancescore for every participant and item identified within one or more videoconference data streams, the importance engine 410 a, 410 b can rank theone or more video conference data streams. For example, in one or moreembodiments, the importance engine 410 a, 410 b aggregates theimportance scores of the people, items, and content identified within avideo conference data stream to calculate an overall importance scorefor the video conference data stream. In at least one embodiment, theoverall importance score for a video conference data stream is useful inoptimizing the display of the video conference data stream.

As shown in FIG. 4 , and as mentioned above, the context manager 108 a,108 b also includes a video encoder 412 a, 412 b. As discussed above,the context manager 108 a, 108 b optimizes the broadcast or transmissionof a video conference data stream such that important areas (e.g.,important people and important items) are broadcast with greaterclarity. Accordingly, in one or more embodiments, the video encoder 412a, 412 b encodes or compresses a video conference data stream such thatunimportant areas are subjected to a higher compression rate.

In one or more embodiments, the video encoder 412 a, 412 b begins theprocess of selectively encoding a video conference data stream bymatching the identified important areas from the still image tocorresponding areas within the video conference data stream from whichthe still image was captured. As discussed above, the context manager108 a, 108 b performs context and content analysis on a still imagetaken from a video conference data stream. Accordingly, in at least oneembodiment, the video encoder 412 a, 412 b utilizes computer vision andimage processing to match reference points in the still image toreference points in the corresponding video conference data stream inorder to identify the important areas in the video conference datastream.

Next, the video encoder 412 a, 412 b selectively compresses the videoconference data stream. In one or more embodiments, the video encoder412 a, 412 b utilizes standard video compression and encoding methods tocompress or encode the video conference data stream. In at least oneembodiment, while compressing or encoding the video conference datastream, the video encoder 412 a, 412 b can utilize different compressionrates on different areas within the video conference data stream (e.g.,using lossy encoding/compression). Accordingly, when the video encoder412 a, 412 b encounters an area within the video conference data streamthat has been deemed important, as described above, the video encoder412 a, 412 b lossily encodes the important areas, such that they aretransferred at a higher data rate. Alternatively, in at least oneembodiment, the video encoder 412 a, 412 b does not compress importantareas within a video conference data stream at all. In one or moreembodiments, the video encoder 412 a, 412 b selectively compresses avideo conference data stream at a broadcasting client-computing device.Alternatively, the video encoder 412 a, 412 b can selectively compress avideo conference data stream on a bridge, depending on network topology.

As mentioned above, and as illustrated in FIG. 4 , the context manager108 a, 108 b also includes a display manager 414 a, 414 b. In one ormore embodiments, the display manager 414 a, 414 b optimizes the displayof one or more video conference data streams on one or more displays 106a, 106 b associated with the client-computing devices 102 a, 102 b. Asdiscussed above, the display manager 414 a, 414 b optimizes the displayof one or more video conference data streams such that important people,items, and content are easier to see.

In one or more embodiments, the display manager 414 a, 414 b optimizesthe display of one or more video conference data streams on thereceiving client-computing device 102. For example, if theclient-computing device 102 a is transmitting a video conference datastream to the client-computing device 102 b, the display manager 414 boptimizes the display of the video conference data stream. In at leastone alternative embodiment, however, if the client-computing device 102a is transmitting a video conference data stream to the client-computingdevice 102 b, the display manager 414 a may optimize the display of thevideo conference data stream prior to transmitting the video conferencedata stream to the client-computing device 102 b.

In at least one embodiment, the display manager 414 a, 414 b optimizesone or more displays by zooming in or zooming out on a video conferencedata stream, splitting or consolidating a video conference data stream,enlarging or minimizing a video conference data stream, and so forth.For example, the display manager 414 a, 414 b utilizes machine learningand/or neural networks to determine how to optimize a display based onthe number of important areas within a video conference data stream. Forinstance, if a video conference data stream includes several importantpeople sitting close together, the display manager 414 a, 414 b maydetermine to zoom in on the group of important people. In anotherexample, if a video conference data stream includes several importantpeople interspersed with non-important people, the display manager 414a, 414 b may split the video conference data stream into separatedisplays zoomed in on each of the important people.

Additionally, if a video conference includes two or more videoconference data streams and the client-computing device 102 a, 102 bincludes two or more displays 106 a, 106 b, the display manager 414 a,414 b can rearrange the display of the two or more video conference datastreams. For example, in response to determining that a presentationchannel switches to a slide including small text, the importance engine410 a, 410 b may increase the importance score associated with thepresentation channel. In response to the change in importance score forthe presentation channel, the display manager 414 a, 414 b may rearrangethe displays 106 a, 106 b of the client-computing device 102 a, 102 bsuch that the presentation channel is displayed on a larger display.

In one or more embodiments, the context manager 108 a, 108 b can controlthe camera(s) 104 a, 104 b in response the analyses performed bycomponents 408 a, 408 b through 414 a, 414 b. For example, as mentionedabove, the camera(s) 104 a, 104 b can include one or more aspects suchas swiveling, zooming in, zooming out, panning, tilting, cropping, viewswitching, and sound-based triangulation. As such, in at least oneembodiment, the context manager 108 a, 108 b can change or one or moreof the aspects of the camera(s) 104 a, 104 b such that the camera(s) 104a, 104 b focus on one or more of the identified important videoconference participants.

Furthermore, in at least one embodiment, when switching between one ormore cameras associated with a single client-computing device, thecontext manager 108 a, 108 b can compute various probabilities in orderto optimize the display of the video conference. For example, thecontext manager 108 a, 108 b can utilize a probability analysis incombination with video, audio, and other information associated with theview of each camera of a client-computing device in order to identify animportant focus (e.g., a speaker, a demonstration, etc.). The contextmanager 108 a, 108 b can then switch to the camera view that mostadvantageously displays the important focus. The context manager 108 a,108 b can also take into account other information when switching cameraviews such as the time since the camera view was last switched.

Additionally, in some embodiments, the context manager 108 a, 108 b cantake into account additional information when selectively compressingand/or optimizing the display of one or more video conference datastreams. For example, in one embodiment, the context manager 108 a, 108b can receive and analyze audio data associated with a video conferencedata stream in order to further identify one or more important videoconference participants. Additionally or alternatively, the contextmanager 108 a, 108 b can receive and analyze movement information,metadata information, and any other type of video signal associated withthe video conference data stream in order to further identify one ormore important video conference participants.

Furthermore, as mentioned above, and as illustrated in FIG. 4 , thecontext manager 108 a, 108 b includes data storage 416 a, 416 b. Asshown, the data storage 416 a, 416 b includes video conference datastream data 418 a, 418 b and display data 420 a, 420 b. In one or moreembodiments, the video conference data stream data 418 a, 418 b includesdata representative of video conference data stream information, asdescribed herein. Similarly, in one or more embodiments, the displaydata 420 a, 420 b includes data representative of display information,as described herein.

FIGS. 1-4 , the corresponding text, and the examples, provide a numberof different methods, systems, and devices for optimizing videoconferences utilizing the video conferencing system 100. In addition tothe foregoing, embodiment can also be described in terms of flowchartscomprising acts and steps in a method for accomplishing a particularresult. For example, FIG. 5 may be performed with less or moresteps/acts or the steps/acts may be performed in differing orders.Additionally, the steps/acts described herein may be repeated orperformed in parallel with one another or in parallel with differentinstances of the same or similar steps/acts.

FIG. 5 illustrates a flowchart of one example method 500 of optimizingthe transmission of a video conference data stream. The method 500includes an act 510 of identifying a video conference data stream. Inparticular, the act 510 involves identifying a video conference datastream including a video channel depicting a plurality of videoconference participants.

The method 500 also includes an act 520 of analyzing the videoconference data stream to determine user identities. In particular, theact 520 involves analyzing the video channel to determine a useridentity for each participant of the plurality of video conferenceparticipants. In one or more embodiments, analyzing the video channel todetermine a user identity for each participant of the plurality of videoconference participants includes utilizing facial recognition todetermine each user identity.

Furthermore, the method 500 includes an act 530 of accessing userinformation corresponding to the user identities. In particular, the act530 involves accessing user information corresponding to the useridentity for each participant of the plurality of video conferenceparticipants. In one or more embodiments, accessing user informationcorresponding to the user identity includes accessing at least one ofsocial networking system information associated with each of theplurality of video conference participants and employment informationassociated with each of the plurality of video conference participants.

The method 500 also includes an act 540 of determining a social contextfor the video channel. In particular, the act 540 involves determining asocial context for the video channel based at least in part on theaccessed user information. For example, in one embodiment, determining asocial context for the video channel further comprises analyzingmetadata associated with the video channel in order to identify apurpose of a video conference depicted in the video channel.

The method 500 further includes an act 550 of identifying importantvideo conference participants. In particular, the act 550 involvesidentifying, based on the accessed user information, one or moreimportant video conference participants from the plurality of videoconference participants. For example, in at least one embodiment, themethod 500 further includes a step of determining a social context forthe video channel by analyzing metadata associated with the videochannel in order to identify a purpose of a video conference depicted inthe video channel. In that embodiment, identifying the one or moreimportant video conference participants from the plurality of videoconference participants is further based on the determined socialcontext for the video channel.

Further, the method 500 includes an act 560 of customizing one or morevideo conference parameters. In particular, the act 550 involvescustomizing one or more video conference parameters based on theidentified one or more important video conference participants. In oneor more embodiments, customizing the one or more video conferenceparameters further includes altering a plurality of camera aspects ofone or more cameras to focus on the one or more important videoconference participants. For example, the one or more camera aspects caninclude one or more of swiveling, zooming in, zooming out, panning,tilting, cropping, view switching, or sound-based triangulation. In atleast one embodiment, customizing the one or more video conferenceparameters further comprises selectively compressing the video channelbased on the identified one or more important video conferenceparticipants, wherein selectively compressing the video channelcomprises selecting a higher quantization amount to use for one or morevideo portions corresponding to the identified one or more importantvideo conference participants. Additionally, in at least one embodiment,the method 500 further includes analyzing the video channel to identifyadditional video information comprising audio information, movementinformation, and video metadata, wherein selectively compressing thevideo channel is further based on the analysis of the additional videoinformation.

In one or more embodiments, the method 500 further includes selectivelycompressing the video channel based on the identified one or moreimportant video conference participants. For example, in at least oneembodiment selectively compressing the video channel based on theidentified one or more important video conference participants includescompressing one or more video portions corresponding to the identifiedone or more important video conference participants at a firstcompression rate, and compressing at least one video portion notcorresponding to the identified one or more important video conferenceparticipants at a second compression rate. For example, in at least oneembodiment, compressing the at least one video portion not correspondingto the identified one or more important video conference participants atthe second compression rate includes compressing a video portioncorresponding to a conference participant that is not included in theidentified one or more important video conference participants at thesecond compression rate. Also, in at least one embodiment, the firstcompression rate is a higher quality compression rate than the secondcompression rate.

In one or more embodiments, the method 500 also includes steps ofassigning a score to one or more portions of the user information foreach participant of the plurality of video conference participants, anddetermining a weighted value for the one or more portions the userinformation for each participant of the plurality of video conferenceparticipants based on the determined social context for the videochannel. Additionally, the method 500 can also include determining animportance score for each of the plurality of video conferenceparticipants based on the determined weighted value and the assignedscore for the one or more portions of the user information for eachparticipant, wherein identifying the one or more important videoconference participants is based on the importance score for each of theplurality of video conference participants. In at least one embodiment,the method 500 also includes calculating, based on the at least one ofthe social networking system information and the employment information,an importance score for each of the plurality of video conferenceparticipants, and wherein identifying one or more important videoconference participants is based on the importance score for each of theplurality of video conference participants. Furthermore, in at least oneembodiment, the method 500 includes determining whether the importancescore for each of the plurality of conference participants meets apredetermined threshold, wherein identifying the one or more importantvideo conference participants from the plurality of video conferenceparticipants is based on the determination that the importance score forthe one or more important video conference participants meets thepredetermined threshold.

FIG. 6 illustrates a flowchart of an example method of optimizing adisplay of one or more video conference data streams. The method 600includes an act 610 of receiving video conference channels. Inparticular, the act 610 involves receiving a plurality of videoconference channels.

Additionally, the method 600 includes an act 620 of determining whetherthe video conference channel is a video channel or a presentationchannel. In particular, the act 620 involves, for each video conferencechannel of the plurality of video conference channels, determiningwhether a video conference channel is a video channel or a presentationchannel.

The method 600 then includes an act 630 of, if the video conferencechannel is a video channel, analyzing the video conference channel forsocial context. In particular, the act 630 involves, based on thedetermination that the video conference data stream is a video channel,analyzing the video conference channel to determine a social context forthe video conference channel. In one or more embodiments, analyzing thevideo conference channel to determine a social context includesdetermining a user identity for one or more video conferenceparticipants depicted within the video conference channel, and analyzinguser information for each of the one or more video conferenceparticipants, wherein user information comprises employment informationand social networking system information.

The method 600 further includes an act 640 of, if the video conferencechannel is a presentation channel, analyzing the video conferencechannel for content characteristics. In particular, the act 640involves, based on the determination that the video conference channelis a presentation channel, analyzing the video conference channel todetermine content characteristics of the video conference channel. Forexample, in at least one embodiment, analyzing the video conferencechannel to determine content characteristics of the video conferencechannel includes analyzing readability features of the video conferencechannel.

Additionally, the method 600 includes an act 650 of optimizing thedisplay of the video conference channels. In particular, the act 650involves optimizing, based on the analysis of each of the plurality ofvideo conference channels, a display of the plurality of videoconference channels. In one or more embodiments, optimizing the displayof the plurality of video conference channels includes at least one of:modifying a display size associated with at least one of the pluralityof video conference channels; repositioning a display positionassociated with at least one of the plurality of video conferencechannels; and adjusting a zoom or crop factor associated with at leastone of the plurality of video conference data streams.

The method 600 can also include and act of calculating an importancescore for each of the plurality of video conference channels. In one ormore embodiments, the method 600 also includes, for each of theplurality of video conference channels determined to be a video channel:identifying one or more participants displayed in the video channel; andcalculating a participant score for each of the identified one or moreparticipants based on user information associated with each of theidentified one or more participants, wherein calculating the importancescore for the video channel is based on the participant score for eachof the identified one or more participants. In at least one embodiment,the method 600 further includes, for each of the plurality of videoconference channels determined to be a presentation channel: identifyingone or more items displayed in the presentation channel; calculating anitem score for each of the identified one or more items; whereincalculating the importance score for the presentation channel is basedon the item score for each of the identified one or more items. As such,in at least one embodiment, optimizing the display of the plurality ofvideo conference channels is further based on the calculated importancescore for each of the plurality of video conference channels.

Embodiments of the present disclosure may comprise or utilize a specialpurpose or general-purpose computer including computer hardware, suchas, for example, one or more processors and system memory, as discussedin greater detail below. Embodiments within the scope of the presentdisclosure also include physical and other computer-readable media forcarrying or storing computer-executable instructions and/or datastructures. In particular, one or more of the processes described hereinmay be implemented at least in part as instructions embodied in anon-transitory computer-readable medium and executable by one or morecomputing devices (e.g., any of the media content access devicesdescribed herein). In general, a processor (e.g., a microprocessor)receives instructions, from a non-transitory computer-readable medium,(e.g., a memory, etc.), and executes those instructions, therebyperforming one or more processes, including one or more of the processesdescribed herein.

Computer-readable media can be any available media that can be accessedby a general purpose or special purpose computer system.Computer-readable media that store computer-executable instructions arenon-transitory computer-readable storage media (devices).Computer-readable media that carry computer-executable instructions aretransmission media. Thus, by way of example, and not limitation,embodiments of the disclosure can comprise at least two distinctlydifferent kinds of computer-readable media: non-transitorycomputer-readable storage media (devices) and transmission media.

Non-transitory computer-readable storage media (devices) includes RAM,ROM, EEPROM, CD-ROM, solid state drives (“SSDs”) (e.g., based on RAM),Flash memory, phase-change memory (“PCM”), other types of memory, otheroptical disk storage, magnetic disk storage or other magnetic storagedevices, or any other medium which can be used to store desired programcode means in the form of computer-executable instructions or datastructures and which can be accessed by a general purpose or specialpurpose computer.

A “network” is defined as one or more data links that enable thetransport of electronic data between computer systems and/or modulesand/or other electronic devices. When information is transferred orprovided over a network or another communications connection (eitherhardwired, wireless, or a combination of hardwired or wireless) to acomputer, the computer properly views the connection as a transmissionmedium. Transmissions media can include a network and/or data linkswhich can be used to carry desired program code means in the form ofcomputer-executable instructions or data structures and which can beaccessed by a general purpose or special purpose computer. Combinationsof the above should also be included within the scope ofcomputer-readable media.

Further, upon reaching various computer system components, program codemeans in the form of computer-executable instructions or data structurescan be transferred automatically from transmission media tonon-transitory computer-readable storage media (devices) (or viceversa). For example, computer-executable instructions or data structuresreceived over a network or data link can be buffered in RAM within anetwork interface module (e.g., a “NIC”), and then eventuallytransferred to computer system RAM and/or to less volatile computerstorage media (devices) at a computer system. Thus, it should beunderstood that non-transitory computer-readable storage media (devices)can be included in computer system components that also (or evenprimarily) utilize transmission media.

Computer-executable instructions comprise, for example, instructions anddata which, when executed at a processor, cause a general purposecomputer, special purpose computer, or special purpose processing deviceto perform a certain function or group of functions. In someembodiments, computer-executable instructions are executed on ageneral-purpose computer to turn the general-purpose computer into aspecial purpose computer implementing elements of the disclosure. Thecomputer executable instructions may be, for example, binaries,intermediate format instructions such as assembly language, or evensource code. Although the subject matter has been described in languagespecific to structural features and/or methodological acts, it is to beunderstood that the subject matter defined in the appended claims is notnecessarily limited to the described features or acts described above.Rather, the described features and acts are disclosed as example formsof implementing the claims.

Those skilled in the art will appreciate that the disclosure may bepracticed in network computing environments with many types of computersystem configurations, including, personal computers, desktop computers,laptop computers, message processors, hand-held devices, multi-processorsystems, microprocessor-based or programmable consumer electronics,network PCs, minicomputers, mainframe computers, mobile telephones,PDAs, tablets, pagers, routers, switches, and the like. The disclosuremay also be practiced in distributed system environments where local andremote computer systems, which are linked (either by hardwired datalinks, wireless data links, or by a combination of hardwired andwireless data links) through a network, both perform tasks. In adistributed system environment, program modules may be located in bothlocal and remote memory storage devices.

Embodiments of the present disclosure can also be implemented in cloudcomputing environments. In this description, “cloud computing” isdefined as a model for enabling on-demand network access to a sharedpool of configurable computing resources. For example, cloud computingcan be employed in the marketplace to offer ubiquitous and convenienton-demand access to the shared pool of configurable computing resources.The shared pool of configurable computing resources can be rapidlyprovisioned via virtualization and released with low management effortor service provider interaction, and then scaled accordingly.

A cloud-computing model can be composed of various characteristics suchas, for example, on-demand self-service, broad network access, resourcepooling, rapid elasticity, measured service, and so forth. Acloud-computing model can also expose various service models, such as,for example, Software as a Service (“SaaS”), Platform as a Service(“PaaS”), and Infrastructure as a Service (“IaaS”). A cloud-computingmodel can also be deployed using different deployment models such asprivate cloud, community cloud, public cloud, hybrid cloud, and soforth. In this description and in the claims, a “cloud-computingenvironment” is an environment in which cloud computing is employed.

FIG. 7 illustrates a block diagram of exemplary computing device 700that may be configured to perform one or more of the processes describedabove. One will appreciate that one or more computing devices such asthe computing device 700 may implement the system 100. As shown by FIG.7 , the computing device 700 can comprise a processor 702, a memory 704,a storage device 706, an I/O interface 708, and a communicationinterface 710, which may be communicatively coupled by way of acommunication infrastructure 712. While an exemplary computing device700 is shown in FIG. 7 , the components illustrated in FIG. 7 are notintended to be limiting. Additional or alternative components may beused in other embodiments. Furthermore, in certain embodiments, thecomputing device 700 can include fewer components than those shown inFIG. 7 . Components of the computing device 700 shown in FIG. 7 will nowbe described in additional detail.

In one or more embodiments, the processor 702 includes hardware forexecuting instructions, such as those making up a computer program. Asan example and not by way of limitation, to execute instructions, theprocessor 702 may retrieve (or fetch) the instructions from an internalregister, an internal cache, the memory 704, or the storage device 706and decode and execute them. In one or more embodiments, the processor702 may include one or more internal caches for data, instructions, oraddresses. As an example and not by way of limitation, the processor 702may include one or more instruction caches, one or more data caches, andone or more translation lookaside buffers (TLBs). Instructions in theinstruction caches may be copies of instructions in the memory 704 orthe storage 706.

The memory 704 may be used for storing data, metadata, and programs forexecution by the processor(s). The memory 704 may include one or more ofvolatile and non-volatile memories, such as Random Access Memory(“RAM”), Read Only Memory (“ROM”), a solid state disk (“SSD”), Flash,Phase Change Memory (“PCM”), or other types of data storage. The memory704 may be internal or distributed memory.

The storage device 706 includes storage for storing data orinstructions. As an example and not by way of limitation, storage device706 can comprise a non-transitory storage medium described above. Thestorage device 706 may include a hard disk drive (HDD), a floppy diskdrive, flash memory, an optical disc, a magneto-optical disc, magnetictape, or a Universal Serial Bus (USB) drive or a combination of two ormore of these. The storage device 706 may include removable ornon-removable (or fixed) media, where appropriate. The storage device706 may be internal or external to the computing device 700. In one ormore embodiments, the storage device 706 is non-volatile, solid-statememory. In other embodiments, the storage device 706 includes read-onlymemory (ROM). Where appropriate, this ROM may be mask programmed ROM,programmable ROM (PROM), erasable PROM (EPROM), electrically erasablePROM (EEPROM), electrically alterable ROM (EAROM), or flash memory or acombination of two or more of these.

The I/O interface 708 allows a user to provide input to, receive outputfrom, and otherwise transfer data to and receive data from computingdevice 700. The I/O interface 708 may include a mouse, a keypad or akeyboard, a touch screen, a camera, an optical scanner, networkinterface, modem, other known I/O devices or a combination of such I/Ointerfaces. The I/O interface 708 may include one or more devices forpresenting output to a user, including, but not limited to, a graphicsengine, a display (e.g., a display screen), one or more output drivers(e.g., display drivers), one or more audio speakers, and one or moreaudio drivers. In certain embodiments, the I/O interface 708 isconfigured to provide graphical data to a display for presentation to auser. The graphical data may be representative of one or more graphicaluser interfaces and/or any other graphical content as may serve aparticular implementation.

The communication interface 710 can include hardware, software, or both.In any event, the communication interface 710 can provide one or moreinterfaces for communication (such as, for example, packet-basedcommunication) between the computing device 700 and one or more othercomputing devices or networks. As an example and not by way oflimitation, the communication interface 710 may include a networkinterface controller (NIC) or network adapter for communicating with anEthernet or other wire-based network or a wireless NIC (WNIC) orwireless adapter for communicating with a wireless network, such as aWI-FI.

Additionally or alternatively, the communication interface 710 mayfacilitate communications with an ad hoc network, a personal areanetwork (PAN), a local area network (LAN), a wide area network (WAN), ametropolitan area network (MAN), or one or more portions of the Internetor a combination of two or more of these. One or more portions of one ormore of these networks may be wired or wireless. As an example, thecommunication interface 710 may facilitate communications with awireless PAN (WPAN) (such as, for example, a BLUETOOTH WPAN), a WI-FInetwork, a WI-MAX network, a cellular telephone network (such as, forexample, a Global System for Mobile Communications (GSM) network), orother suitable wireless network or a combination thereof.

Additionally, the communication interface 710 may facilitatecommunications various communication protocols. Examples ofcommunication protocols that may be used include, but are not limitedto, data transmission media, communications devices, TransmissionControl Protocol (“TCP”), Internet Protocol (“IP”), File TransferProtocol (“FTP”), Telnet, Hypertext Transfer Protocol (“HTTP”),Hypertext Transfer Protocol Secure (“HTTPS”), Session InitiationProtocol (“SIP”), Simple Object Access Protocol (“SOAP”), ExtensibleMark-up Language (“XML”) and variations thereof, Simple Mail TransferProtocol (“SMTP”), Real-Time Transport Protocol (“RTP”), User DatagramProtocol (“UDP”), Global System for Mobile Communications (“GSM”)technologies, Code Division Multiple Access (“CDMA”) technologies, TimeDivision Multiple Access (“TDMA”) technologies, Short Message Service(“SMS”), Multimedia Message Service (“MMS”), radio frequency (“RF”)signaling technologies, Long Term Evolution (“LTE”) technologies,wireless communication technologies, in-band and out-of-band signalingtechnologies, and other suitable communications networks andtechnologies.

The communication infrastructure 712 may include hardware, software, orboth that couples components of the computing device 700 to each other.As an example and not by way of limitation, the communicationinfrastructure 712 may include an Accelerated Graphics Port (AGP) orother graphics bus, an Enhanced Industry Standard Architecture (EISA)bus, a front-side bus (FSB), a HYPERTRANSPORT (HT) interconnect, anIndustry Standard Architecture (ISA) bus, an INFINIBAND interconnect, alow-pin-count (LPC) bus, a memory bus, a Micro Channel Architecture(MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express(PCIe) bus, a serial advanced technology attachment (SATA) bus, a VideoElectronics Standards Association local (VLB) bus, or another suitablebus or a combination thereof.

As mentioned above, the system 100 can comprise a social networkingsystem. A social networking system may enable its users (such as personsor organizations) to interact with the system and with each other. Thesocial networking system may, with input from a user, create and storein the social networking system a user profile associated with the user.The user profile may include demographic information,communication-channel information, and information on personal interestsof the user. The social networking system may also, with input from auser, create and store a record of relationships of the user with otherusers of the social networking system, as well as provide services(e.g., posts, photo-sharing, video-sharing, event organization,messaging, games, or advertisements) to facilitate social interactionbetween or among users.

The social networking system may store records of users andrelationships between users in a social graph comprising a plurality ofnodes and a plurality of edges connecting the nodes. The nodes maycomprise a plurality of user nodes and a plurality of concept nodes. Auser node of the social graph may correspond to a user of the socialnetworking system. A user may be an individual (human user), an entity(e.g., an enterprise, business, or third party application), or a group(e.g., of individuals or entities). A user node corresponding to a usermay comprise information provided by the user and information gatheredby various systems, including the social networking system.

For example, the user may provide his or her name, profile picture, cityof residence, contact information, birth date, gender, marital status,family status, employment, educational background, preferences,interests, and other demographic information to be included in the usernode. Each user node of the social graph may have a corresponding webpage (typically known as a profile page). In response to a requestincluding a user name, the social networking system can access a usernode corresponding to the user name, and construct a profile pageincluding the name, a profile picture, and other information associatedwith the user. A profile page of a first user may display to a seconduser all or a portion of the first user's information based on one ormore privacy settings by the first user and the relationship between thefirst user and the second user.

A concept node may correspond to a concept of the social networkingsystem. For example, a concept can represent a real-world entity, suchas a movie, a song, a sports team, a celebrity, a group, a restaurant,or a place or a location. An administrative user of a concept nodecorresponding to a concept may create or update the concept node byproviding information of the concept (e.g., by filling out an onlineform), causing the social networking system to associate the informationwith the concept node. For example and without limitation, informationassociated with a concept can include a name or a title, one or moreimages (e.g., an image of cover page of a book), a web site (e.g., anURL address) or contact information (e.g., a phone number, an emailaddress). Each concept node of the social graph may correspond to a webpage. For example, in response to a request including a name, the socialnetworking system can access a concept node corresponding to the name,and construct a web page including the name and other informationassociated with the concept.

An edge between a pair of nodes may represent a relationship between thepair of nodes. For example, an edge between two user nodes can representa friendship between two users. For another example, the socialnetworking system may construct a web page (or a structured document) ofa concept node (e.g., a restaurant, a celebrity), incorporating one ormore selectable option or selectable elements (e.g., “like”, “check in”)in the web page. A user can access the page using a web browser hostedby the user's client device and select a selectable option or selectableelement, causing the client device to transmit to the social networkingsystem a request to create an edge between a user node of the user and aconcept node of the concept, indicating a relationship between the userand the concept (e.g., the user checks in a restaurant, or the user“likes” a celebrity).

As an example, a user may provide (or change) his or her city ofresidence, causing the social networking system to create an edgebetween a user node corresponding to the user and a concept nodecorresponding to the city declared by the user as his or her city ofresidence. In addition, the degree of separation between any two nodesis defined as the minimum number of hops required to traverse the socialgraph from one node to the other. A degree of separation between twonodes can be considered a measure of relatedness between the users orthe concepts represented by the two nodes in the social graph. Forexample, two users having user nodes that are directly connected by anedge (i.e., are first-degree nodes) may be described as “connectedusers” or “friends.” Similarly, two users having user nodes that areconnected only through another user node (i.e., are second-degree nodes)may be described as “friends of friends.”

A social networking system may support a variety of applications, suchas photo sharing, on-line calendars and events, gaming, instantmessaging, and advertising. For example, the social networking systemmay also include media sharing capabilities. Also, the social networkingsystem may allow users to post photographs and other multimedia contentitems to a user's profile page (typically known as “wall posts” or“timeline posts”) or in a photo album, both of which may be accessibleto other users of the social networking system depending upon the user'sconfigured privacy settings. The social networking system may also allowusers to configure events. For example, a first user may configure anevent with attributes including time and date of the event, location ofthe event and other users invited to the event. The invited users mayreceive invitations to the event and respond (such as by accepting theinvitation or declining it). Furthermore, the social networking systemmay allow users to maintain a personal calendar. Similarly to events,the calendar entries may include times, dates, locations and identitiesof other users.

FIG. 8 illustrates an example network environment 800 of a socialnetworking system. Network environment 800 includes a client system 806,a social networking system 802, and a third-party system 808 connectedto each other by a network 804. Although FIG. 8 illustrates a particulararrangement of client system 806, social networking system 802,third-party system 808, and network 804, this disclosure contemplatesany suitable arrangement of client system 806, social networking system802, third-party system 808, and network 804. As an example and not byway of limitation, two or more of client system 806, social networkingsystem 802, and third-party system 808 may be connected to each otherdirectly, bypassing network 804. As another example, two or more ofclient system 806, social networking system 802, and third-party system808 may be physically or logically co-located with each other in wholeor in part. Moreover, although FIG. 8 illustrates a particular number ofclient systems 806, social networking systems 802, third-party systems808, and networks 804, this disclosure contemplates any suitable numberof client systems 806, social networking systems 802, third-partysystems 808, and networks 804. As an example and not by way oflimitation, network environment 800 may include multiple client system806, social networking systems 802, third-party systems 808, andnetworks 804.

This disclosure contemplates any suitable network 804. As an example andnot by way of limitation, one or more portions of network 804 mayinclude an ad hoc network, an intranet, an extranet, a virtual privatenetwork (VPN), a local area network (LAN), a wireless LAN (WLAN), a widearea network (WAN), a wireless WAN (WWAN), a metropolitan area network(MAN), a portion of the Internet, a portion of the Public SwitchedTelephone Network (PSTN), a cellular telephone network, or a combinationof two or more of these. Network 804 may include one or more networks804.

Links may connect client system 806, social networking system 802, andthird-party system 808 to communication network 804 or to each other.This disclosure contemplates any suitable links. In particularembodiments, one or more links include one or more wireline (such as forexample Digital Subscriber Line (DSL) or Data Over Cable ServiceInterface Specification (DOCSIS)), wireless (such as for example Wi-Fior Worldwide Interoperability for Microwave Access (WiMAX)), or optical(such as for example Synchronous Optical Network (SONET) or SynchronousDigital Hierarchy (SDH)) links. In particular embodiments, one or morelinks each include an ad hoc network, an intranet, an extranet, a VPN, aLAN, a WLAN, a WAN, a WWAN, a MAN, a portion of the Internet, a portionof the PSTN, a cellular technology-based network, a satellitecommunications technology-based network, another link, or a combinationof two or more such links. Links need not necessarily be the samethroughout network environment 800. One or more first links may differin one or more respects from one or more second links.

In particular embodiments, client system 806 may be an electronic deviceincluding hardware, software, or embedded logic components or acombination of two or more such components and capable of carrying outthe appropriate functionalities implemented or supported by clientsystem 806. As an example and not by way of limitation, a client system806 may include a computer system such as a desktop computer, notebookor laptop computer, netbook, a tablet computer, e-book reader, GPSdevice, camera, personal digital assistant (PDA), handheld electronicdevice, cellular telephone, smartphone, other suitable electronicdevice, or any suitable combination thereof. This disclosurecontemplates any suitable client systems 806. A client system 806 mayenable a network user at client system 806 to access network 804. Aclient system 806 may enable its user to communicate with other users atother client systems 806.

In particular embodiments, client system 806 may include a web browser,such as MICROSOFT INTERNET EXPLORER, GOOGLE CHROME or MOZILLA FIREFOX,and may have one or more add-ons, plug-ins, or other extensions, such asTOOLBAR or YAHOO TOOLBAR. A user at client system 806 may enter aUniform Resource Locator (URL) or other address directing the webbrowser to a particular server (such as server, or a server associatedwith a third-party system 808), and the web browser may generate a HyperText Transfer Protocol (HTTP) request and communicate the HTTP requestto server. The server may accept the HTTP request and communicate toclient system 806 one or more Hyper Text Markup Language (HTML) filesresponsive to the HTTP request. Client system 806 may render a webpagebased on the HTML files from the server for presentation to the user.This disclosure contemplates any suitable webpage files. As an exampleand not by way of limitation, webpages may render from HTML files,Extensible Hyper Text Markup Language (XHTML) files, or ExtensibleMarkup Language (XML) files, according to particular needs. Such pagesmay also execute scripts such as, for example and without limitation,those written in JAVASCRIPT, JAVA, MICROSOFT SILVERLIGHT, combinationsof markup language and scripts such as AJAX (Asynchronous JAVASCRIPT andXML), and the like. Herein, reference to a webpage encompasses one ormore corresponding webpage files (which a browser may use to render thewebpage) and vice versa, where appropriate.

In particular embodiments, social networking system 802 may be anetwork-addressable computing system that can host an online socialnetwork. Social networking system 802 may generate, store, receive, andsend social-networking data, such as, for example, user-profile data,concept-profile data, social-graph information, or other suitable datarelated to the online social network. Social networking system 802 maybe accessed by the other components of network environment 800 eitherdirectly or via network 804. In particular embodiments, socialnetworking system 802 may include one or more servers. Each server maybe a unitary server or a distributed server spanning multiple computersor multiple datacenters. Servers may be of various types, such as, forexample and without limitation, web server, news server, mail server,message server, advertising server, file server, application server,exchange server, database server, proxy server, another server suitablefor performing functions or processes described herein, or anycombination thereof. In particular embodiments, each server may includehardware, software, or embedded logic components or a combination of twoor more such components for carrying out the appropriate functionalitiesimplemented or supported by server. In particular embodiments, socialnetworking system 802 may include one or more data stores. Data storesmay be used to store various types of information. In particularembodiments, the information stored in data stores may be organizedaccording to specific data structures. In particular embodiments, eachdata store may be a relational, columnar, correlation, or other suitabledatabase. Although this disclosure describes or illustrates particulartypes of databases, this disclosure contemplates any suitable types ofdatabases. Particular embodiments may provide interfaces that enable aclient system 806, a social networking system 802, or a third-partysystem 808 to manage, retrieve, modify, add, or delete, the informationstored in data store.

In particular embodiments, social networking system 802 may store one ormore social graphs in one or more data stores. In particularembodiments, a social graph may include multiple nodes—which may includemultiple user nodes (each corresponding to a particular user) ormultiple concept nodes (each corresponding to a particular concept)—andmultiple edges connecting the nodes. Social networking system 802 mayprovide users of the online social network the ability to communicateand interact with other users. In particular embodiments, users may jointhe online social network via social networking system 802 and then addconnections (e.g., relationships) to a number of other users of socialnetworking system 802 whom they want to be connected to. Herein, theterm “friend” may refer to any other user of social networking system802 with whom a user has formed a connection, association, orrelationship via social networking system 802.

In particular embodiments, social networking system 802 may provideusers with the ability to take actions on various types of items orobjects, supported by social networking system 802. As an example andnot by way of limitation, the items and objects may include groups orsocial networks to which users of social networking system 802 maybelong, events or calendar entries in which a user might be interested,computer-based applications that a user may use, transactions that allowusers to buy or sell items via the service, interactions withadvertisements that a user may perform, or other suitable items orobjects. A user may interact with anything that is capable of beingrepresented in social networking system 802 or by an external system ofthird-party system 808, which is separate from social networking system802 and coupled to social networking system 802 via a network 804.

In particular embodiments, social networking system 802 may be capableof linking a variety of entities. As an example and not by way oflimitation, social networking system 802 may enable users to interactwith each other as well as receive content from third-party systems 808or other entities, or to allow users to interact with these entitiesthrough an application programming interfaces (API) or othercommunication channels.

In particular embodiments, a third-party system 808 may include one ormore types of servers, one or more data stores, one or more interfaces,including but not limited to APIs, one or more web services, one or morecontent sources, one or more networks, or any other suitable components,e.g., that servers may communicate with. A third-party system 808 may beoperated by a different entity from an entity operating socialnetworking system 802. In particular embodiments, however, socialnetworking system 802 and third-party systems 808 may operate inconjunction with each other to provide social-networking services tousers of social networking system 802 or third-party systems 808. Inthis sense, social networking system 802 may provide a platform, orbackbone, which other systems, such as third-party systems 808, may useto provide social-networking services and functionality to users acrossthe Internet.

In particular embodiments, a third-party system 808 may include athird-party content object provider. A third-party content objectprovider may include one or more sources of content objects, which maybe communicated to a client system 806. As an example and not by way oflimitation, content objects may include information regarding things oractivities of interest to the user, such as, for example, movie showtimes, movie reviews, restaurant reviews, restaurant menus, productinformation and reviews, or other suitable information. As anotherexample and not by way of limitation, content objects may includeincentive content objects, such as coupons, discount tickets, giftcertificates, or other suitable incentive objects.

In particular embodiments, social networking system 802 also includesuser-generated content objects, which may enhance a user's interactionswith social networking system 802. User-generated content may includeanything a user can add, upload, send, or “post” to social networkingsystem 802. As an example and not by way of limitation, a usercommunicates posts to social networking system 802 from a client system806. Posts may include data such as status updates or other textualdata, location information, photos, videos, links, music or othersimilar data or media. Content may also be added to social networkingsystem 802 by a third-party through a “communication channel,” such as anewsfeed or stream.

In particular embodiments, social networking system 802 may include avariety of servers, sub-systems, programs, modules, logs, and datastores. In particular embodiments, social networking system 802 mayinclude one or more of the following: a web server, action logger,API-request server, relevance-and-ranking engine, content-objectclassifier, notification controller, action log,third-party-content-object-exposure log, inference module,authorization/privacy server, search module, advertisement-targetingmodule, user-interface module, user-profile store, connection store,third-party content store, or location store. Social networking system802 may also include suitable components such as network interfaces,security mechanisms, load balancers, failover servers,management-and-network-operations consoles, other suitable components,or any suitable combination thereof. In particular embodiments, socialnetworking system 802 may include one or more user-profile stores forstoring user profiles. A user profile may include, for example,biographic information, demographic information, behavioral information,social information, or other types of descriptive information, such aswork experience, educational history, hobbies or preferences, interests,affinities, or location. Interest information may include interestsrelated to one or more categories. Categories may be general orspecific. As an example and not by way of limitation, if a user “likes”an article about a brand of shoes the category may be the brand, or thegeneral category of “shoes” or “clothing.” A connection store may beused for storing connection information about users. The connectioninformation may indicate users who have similar or common workexperience, group memberships, hobbies, educational history, or are inany way related or share common attributes. The connection informationmay also include user-defined connections between different users andcontent (both internal and external). A web server may be used forlinking social networking system 802 to one or more client systems 806or one or more third-party system 808 via network 804. The web servermay include a mail server or other messaging functionality for receivingand routing messages between social networking system 802 and one ormore client systems 806. An API-request server may allow a third-partysystem 808 to access information from social networking system 802 bycalling one or more APIs. An action logger may be used to receivecommunications from a web server about a user's actions on or off socialnetworking system 802. In conjunction with the action log, athird-party-content-object log may be maintained of user exposures tothird-party-content objects. A notification controller may provideinformation regarding content objects to a client system 806.Information may be pushed to a client system 806 as notifications, orinformation may be pulled from client system 806 responsive to a requestreceived from client system 806. Authorization servers may be used toenforce one or more privacy settings of the users of social networkingsystem 802. A privacy setting of a user determines how particularinformation associated with a user can be shared. The authorizationserver may allow users to opt in to or opt out of having their actionslogged by social networking system 802 or shared with other systems(e.g., third-party system 808), such as, for example, by settingappropriate privacy settings. Third-party-content-object stores may beused to store content objects received from third parties, such as athird-party system 808. Location stores may be used for storing locationinformation received from client systems 806 associated with users.Advertisement-pricing modules may combine social information, thecurrent time, location information, or other suitable information toprovide relevant advertisements, in the form of notifications, to auser.

FIG. 9 illustrates example social graph 900. In particular embodiments,social networking system 802 may store one or more social graphs 900 inone or more data stores. In particular embodiments, social graph 900 mayinclude multiple nodes—which may include multiple user nodes 902 ormultiple concept nodes 904—and multiple edges 906 connecting the nodes.Example social graph 900 illustrated in FIG. 9 is shown, for didacticpurposes, in a two-dimensional visual map representation. In particularembodiments, a social networking system 802, client system 806, orthird-party system 808 may access social graph 900 and relatedsocial-graph information for suitable applications. The nodes and edgesof social graph 900 may be stored as data objects, for example, in adata store (such as a social-graph database). Such a data store mayinclude one or more searchable or query able indexes of nodes or edgesof social graph 900.

In particular embodiments, a user node 902 may correspond to a user ofsocial networking system 802. As an example and not by way oflimitation, a user may be an individual (human user), an entity (e.g.,an enterprise, business, or third-party application), or a group (e.g.,of individuals or entities) that interacts or communicates with or oversocial networking system 802. In particular embodiments, when a userregisters for an account with social networking system 802, socialnetworking system 802 may create a user node 902 corresponding to theuser, and store the user node 902 in one or more data stores. Users anduser nodes 902 described herein may, where appropriate, refer toregistered users and user nodes 902 associated with registered users. Inaddition or as an alternative, users and user nodes 902 described hereinmay, where appropriate, refer to users that have not registered withsocial networking system 802. In particular embodiments, a user node 902may be associated with information provided by a user or informationgathered by various systems, including social networking system 802. Asan example and not by way of limitation, a user may provide his or hername, profile picture, contact information, birth date, sex, maritalstatus, family status, employment, education background, preferences,interests, or other demographic information. In particular embodiments,a user node 902 may be associated with one or more data objectscorresponding to information associated with a user. In particularembodiments, a user node 902 may correspond to one or more webpages.

In particular embodiments, a concept node 904 may correspond to aconcept. As an example and not by way of limitation, a concept maycorrespond to a place (such as, for example, a movie theater,restaurant, landmark, or city); a website (such as, for example, awebsite associated with social-network system 802 or a third-partywebsite associated with a web-application server); an entity (such as,for example, a person, business, group, sports team, or celebrity); aresource (such as, for example, an audio file, video file, digitalphoto, text file, structured document, or application) which may belocated within social networking system 802 or on an external server,such as a web-application server; real or intellectual property (suchas, for example, a sculpture, painting, movie, game, song, idea,photograph, or written work); a game; an activity; an idea or theory;another suitable concept; or two or more such concepts. A concept node904 may be associated with information of a concept provided by a useror information gathered by various systems, including social networkingsystem 802. As an example and not by way of limitation, information of aconcept may include a name or a title; one or more images (e.g., animage of the cover page of a book); a location (e.g., an address or ageographical location); a website (which may be associated with a URL);contact information (e.g., a phone number or an email address); othersuitable concept information; or any suitable combination of suchinformation. In particular embodiments, a concept node 904 may beassociated with one or more data objects corresponding to informationassociated with concept node 904. In particular embodiments, a conceptnode 904 may correspond to one or more webpages.

In particular embodiments, a node in social graph 900 may represent orbe represented by a webpage (which may be referred to as a “profilepage”). Profile pages may be hosted by or accessible to socialnetworking system 802. Profile pages may also be hosted on third-partywebsites associated with a third-party server 908. As an example and notby way of limitation, a profile page corresponding to a particularexternal webpage may be the particular external webpage and the profilepage may correspond to a particular concept node 904. Profile pages maybe viewable by all or a selected subset of other users. As an exampleand not by way of limitation, a user node 902 may have a correspondinguser-profile page in which the corresponding user may add content, makedeclarations, or otherwise express himself or herself. As anotherexample and not by way of limitation, a concept node 904 may have acorresponding concept-profile page in which one or more users may addcontent, make declarations, or express themselves, particularly inrelation to the concept corresponding to concept node 904.

In particular embodiments, a concept node 904 may represent athird-party webpage or resource hosted by a third-party system 808. Thethird-party webpage or resource may include, among other elements,content, a selectable or other icon, or other inter-actable object(which may be implemented, for example, in JavaScript, AJAX, or PHPcodes) representing an action or activity. As an example and not by wayof limitation, a third-party webpage may include a selectable icon suchas “like,” “check in,” “eat,” “recommend,” or another suitable action oractivity. A user viewing the third-party webpage may perform an actionby selecting one of the icons (e.g., “eat”), causing a client system 806to send to social networking system 802 a message indicating the user'saction. In response to the message, social networking system 802 maycreate an edge (e.g., an “eat” edge) between a user node 902corresponding to the user and a concept node 904 corresponding to thethird-party webpage or resource and store edge 906 in one or more datastores.

In particular embodiments, a pair of nodes in social graph 900 may beconnected to each other by one or more edges 906. An edge 906 connectinga pair of nodes may represent a relationship between the pair of nodes.In particular embodiments, an edge 906 may include or represent one ormore data objects or attributes corresponding to the relationshipbetween a pair of nodes. As an example and not by way of limitation, afirst user may indicate that a second user is a “friend” of the firstuser. In response to this indication, social networking system 802 maysend a “friend request” to the second user. If the second user confirmsthe “friend request,” social networking system 802 may create an edge906 connecting the first user's user node 902 to the second user's usernode 902 in social graph 900 and store edge 906 as social-graphinformation in one or more of data stores. In the example of FIG. 9 ,social graph 900 includes an edge 906 indicating a friend relationbetween user nodes 902 of user “A” and user “B” and an edge indicating afriend relation between user nodes 902 of user “C” and user “B.”Although this disclosure describes or illustrates particular edges 906with particular attributes connecting particular user nodes 902, thisdisclosure contemplates any suitable edges 906 with any suitableattributes connecting user nodes 902. As an example and not by way oflimitation, an edge 906 may represent a friendship, family relationship,business or employment relationship, fan relationship, followerrelationship, visitor relationship, subscriber relationship,superior/subordinate relationship, reciprocal relationship,non-reciprocal relationship, another suitable type of relationship, ortwo or more such relationships. Moreover, although this disclosuregenerally describes nodes as being connected, this disclosure alsodescribes users or concepts as being connected. Herein, references tousers or concepts being connected may, where appropriate, refer to thenodes corresponding to those users or concepts being connected in socialgraph 900 by one or more edges 906.

In particular embodiments, an edge 906 between a user node 902 and aconcept node 904 may represent a particular action or activity performedby a user associated with user node 902 toward a concept associated witha concept node 904. As an example and not by way of limitation, asillustrated in FIG. 9 , a user may “like,” “attended,” “played,”“listened,” “cooked,” “worked at,” or “watched” a concept, each of whichmay correspond to an edge type or subtype. A concept-profile pagecorresponding to a concept node 904 may include, for example, aselectable “check in” icon (such as, for example, a clickable “check in”icon) or a selectable “add to favorites” icon. Similarly, after a userclicks these icons, social networking system 802 may create a “favorite”edge or a “check in” edge in response to a user's action correspondingto a respective action. As another example and not by way of limitation,a user (user “C”) may listen to a particular song (“Ramble On”) using aparticular application (SPOTIFY, which is an online music application).In this case, social networking system 802 may create a “listened” edge906 and a “used” edge (as illustrated in FIG. 9 ) between user nodes 902corresponding to the user and concept nodes 904 corresponding to thesong and application to indicate that the user listened to the song andused the application. Moreover, social networking system 802 may createa “played” edge 906 (as illustrated in FIG. 9 ) between concept nodes904 corresponding to the song and the application to indicate that theparticular song was played by the particular application. In this case,“played” edge 906 corresponds to an action performed by an externalapplication (SPOTIFY) on an external audio file (the song “Imagine”).Although this disclosure describes particular edges 906 with particularattributes connecting user nodes 902 and concept nodes 904, thisdisclosure contemplates any suitable edges 906 with any suitableattributes connecting user nodes 902 and concept nodes 904. Moreover,although this disclosure describes edges between a user node 902 and aconcept node 904 representing a single relationship, this disclosurecontemplates edges between a user node 902 and a concept node 904representing one or more relationships. As an example and not by way oflimitation, an edge 906 may represent both that a user likes and hasused at a particular concept. Alternatively, another edge 906 mayrepresent each type of relationship (or multiples of a singlerelationship) between a user node 902 and a concept node 904 (asillustrated in FIG. 9 between user node 902 for user “E” and conceptnode 904 for “SPOTIFY”).

In particular embodiments, social networking system 802 may create anedge 906 between a user node 902 and a concept node 904 in social graph900. As an example and not by way of limitation, a user viewing aconcept-profile page (such as, for example, by using a web browser or aspecial-purpose application hosted by the user's client system 806) mayindicate that he or she likes the concept represented by the conceptnode 904 by clicking or selecting a “Like” icon, which may cause theuser's client system 806 to send to social networking system 802 amessage indicating the user's liking of the concept associated with theconcept-profile page. In response to the message, social networkingsystem 802 may create an edge 906 between user node 902 associated withthe user and concept node 904, as illustrated by “like” edge 906 betweenthe user and concept node 904. In particular embodiments, socialnetworking system 802 may store an edge 906 in one or more data stores.In particular embodiments, an edge 906 may be automatically formed bysocial networking system 802 in response to a particular user action. Asan example and not by way of limitation, if a first user uploads apicture, watches a movie, or listens to a song, an edge 906 may beformed between user node 902 corresponding to the first user and conceptnodes 904 corresponding to those concepts. Although this disclosuredescribes forming particular edges 906 in particular manners, thisdisclosure contemplates forming any suitable edges 906 in any suitablemanner.

In particular embodiments, an advertisement may be text (which may beHTML-linked), one or more images (which may be HTML-linked), one or morevideos, audio, one or more ADOBE FLASH files, a suitable combination ofthese, or any other suitable advertisement in any suitable digitalformat presented on one or more webpages, in one or more e-mails, or inconnection with search results requested by a user. In addition or as analternative, an advertisement may be one or more sponsored stories(e.g., a newsfeed or ticker item on social networking system 802). Asponsored story may be a social action by a user (such as “liking” apage, “liking” or commenting on a post on a page, RSVPing to an eventassociated with a page, voting on a question posted on a page, checkingin to a place, using an application or playing a game, or “liking” orsharing a website) that an advertiser promotes, for example, by havingthe social action presented within a pre-determined area of a profilepage of a user or other page, presented with additional informationassociated with the advertiser, bumped up or otherwise highlightedwithin newsfeeds or tickers of other users, or otherwise promoted. Theadvertiser may pay to have the social action promoted. As an example andnot by way of limitation, advertisements may be included among thesearch results of a search-results page, where sponsored content ispromoted over non-sponsored content.

In particular embodiments, an advertisement may be requested for displaywithin social-networking-system webpages, third-party webpages, or otherpages. An advertisement may be displayed in a dedicated portion of apage, such as in a banner area at the top of the page, in a column atthe side of the page, in a GUI of the page, in a pop-up window, in adrop-down menu, in an input field of the page, over the top of contentof the page, or elsewhere with respect to the page. In addition or as analternative, an advertisement may be displayed within an application. Anadvertisement may be displayed within dedicated pages, requiring theuser to interact with or watch the advertisement before the user mayaccess a page or utilize an application. The user may, for example viewthe advertisement through a web browser.

A user may interact with an advertisement in any suitable manner. Theuser may click or otherwise select the advertisement. By selecting theadvertisement, the user may be directed to (or a browser or otherapplication being used by the user) a page associated with theadvertisement. At the page associated with the advertisement, the usermay take additional actions, such as purchasing a product or serviceassociated with the advertisement, receiving information associated withthe advertisement, or subscribing to a newsletter associated with theadvertisement. An advertisement with audio or video may be played byselecting a component of the advertisement (like a “play button”).Alternatively, by selecting the advertisement, social networking system802 may execute or modify a particular action of the user.

An advertisement may also include social-networking-system functionalitythat a user may interact with. As an example and not by way oflimitation, an advertisement may enable a user to “like” or otherwiseendorse the advertisement by selecting an icon or link associated withendorsement. As another example and not by way of limitation, anadvertisement may enable a user to search (e.g., by executing a query)for content related to the advertiser. Similarly, a user may share theadvertisement with another user (e.g., through social networking system802) or RSVP (e.g., through social networking system 802) to an eventassociated with the advertisement. In addition or as an alternative, anadvertisement may include social-networking-system context directed tothe user. As an example and not by way of limitation, an advertisementmay display information about a friend of the user within socialnetworking system 802 who has taken an action associated with thesubject matter of the advertisement.

In particular embodiments, social networking system 802 may determinethe social-graph affinity (which may be referred to herein as“affinity”) of various social-graph entities for each other. Affinitymay represent the strength of a relationship or level of interestbetween particular objects associated with the online social network,such as users, concepts, content, actions, advertisements, other objectsassociated with the online social network, or any suitable combinationthereof. Affinity may also be determined with respect to objectsassociated with third-party systems 908 or other suitable systems. Anoverall affinity for a social-graph entity for each user, subjectmatter, or type of content may be established. The overall affinity maychange based on continued monitoring of the actions or relationshipsassociated with the social-graph entity. Although this disclosuredescribes determining particular affinities in a particular manner, thisdisclosure contemplates determining any suitable affinities in anysuitable manner.

In particular embodiments, social networking system 802 may measure orquantify social-graph affinity using an affinity coefficient (which maybe referred to herein as “coefficient”). The coefficient may representor quantify the strength of a relationship between particular objectsassociated with the online social network. The coefficient may alsorepresent a probability or function that measures a predictedprobability that a user will perform a particular action based on theuser's interest in the action. In this way, a user's future actions maybe predicted based on the user's prior actions, where the coefficientmay be calculated at least in part the history of the user's actions.Coefficients may be used to predict any number of actions, which may bewithin or outside of the online social network. As an example and not byway of limitation, these actions may include various types ofcommunications, such as sending messages, posting content, or commentingon content; various types of observation actions, such as accessing orviewing profile pages, media, or other suitable content; various typesof coincidence information about two or more social-graph entities, suchas being in the same group, tagged in the same photograph, checked-in atthe same location, or attending the same event; or other suitableactions. Although this disclosure describes measuring affinity in aparticular manner, this disclosure contemplates measuring affinity inany suitable manner.

In particular embodiments, social networking system 802 may use avariety of factors to calculate a coefficient. These factors mayinclude, for example, user actions, types of relationships betweenobjects, location information, other suitable factors, or anycombination thereof. In particular embodiments, different factors may beweighted differently when calculating the coefficient. The weights foreach factor may be static or the weights may change according to, forexample, the user, the type of relationship, the type of action, theuser's location, and so forth. Ratings for the factors may be combinedaccording to their weights to determine an overall coefficient for theuser. As an example and not by way of limitation, particular useractions may be assigned both a rating and a weight while a relationshipassociated with the particular user action is assigned a rating and acorrelating weight (e.g., so the weights total 100%). To calculate thecoefficient of a user towards a particular object, the rating assignedto the user's actions may comprise, for example, 60% of the overallcoefficient, while the relationship between the user and the object maycomprise 40% of the overall coefficient. In particular embodiments, thesocial networking system 802 may consider a variety of variables whendetermining weights for various factors used to calculate a coefficient,such as, for example, the time since information was accessed, decayfactors, frequency of access, relationship to information orrelationship to the object about which information was accessed,relationship to social-graph entities connected to the object, short- orlong-term averages of user actions, user feedback, other suitablevariables, or any combination thereof. As an example and not by way oflimitation, a coefficient may include a decay factor that causes thestrength of the signal provided by particular actions to decay withtime, such that more recent actions are more relevant when calculatingthe coefficient. The ratings and weights may be continuously updatedbased on continued tracking of the actions upon which the coefficient isbased. Any type of process or algorithm may be employed for assigning,combining, averaging, and so forth the ratings for each factor and theweights assigned to the factors. In particular embodiments, socialnetworking system 802 may determine coefficients using machine-learningalgorithms trained on historical actions and past user responses, ordata farmed from users by exposing them to various options and measuringresponses. Although this disclosure describes calculating coefficientsin a particular manner, this disclosure contemplates calculatingcoefficients in any suitable manner.

In particular embodiments, social networking system 802 may calculate acoefficient based on a user's actions. Social networking system 802 maymonitor such actions on the online social network, on a third-partysystem 808, on other suitable systems, or any combination thereof. Anysuitable type of user actions may be tracked or monitored. Typical useractions include viewing profile pages, creating or posting content,interacting with content, joining groups, listing and confirmingattendance at events, checking-in at locations, liking particular pages,creating pages, and performing other tasks that facilitate socialaction. In particular embodiments, social networking system 802 maycalculate a coefficient based on the user's actions with particulartypes of content. The content may be associated with the online socialnetwork, a third-party system 808, or another suitable system. Thecontent may include users, profile pages, posts, news stories,headlines, instant messages, chat room conversations, emails,advertisements, pictures, video, music, other suitable objects, or anycombination thereof. Social networking system 802 may analyze a user'sactions to determine whether one or more of the actions indicate anaffinity for subject matter, content, other users, and so forth. As anexample and not by way of limitation, if a user may make frequentlyposts content related to “coffee” or variants thereof, social networkingsystem 802 may determine the user has a high coefficient with respect tothe concept “coffee”. Particular actions or types of actions may beassigned a higher weight and/or rating than other actions, which mayaffect the overall calculated coefficient. As an example and not by wayof limitation, if a first user emails a second user, the weight or therating for the action may be higher than if the first user simply viewsthe user-profile page for the second user.

In particular embodiments, social networking system 802 may calculate acoefficient based on the type of relationship between particularobjects. Referencing the social graph 900, social networking system 802may analyze the number and/or type of edges 906 connecting particularuser nodes 902 and concept nodes 904 when calculating a coefficient. Asan example and not by way of limitation, user nodes 902 that areconnected by a spouse-type edge (representing that the two users aremarried) may be assigned a higher coefficient than a user node 902 thatare connected by a friend-type edge. In other words, depending upon theweights assigned to the actions and relationships for the particularuser, the overall affinity may be determined to be higher for contentabout the user's spouse than for content about the user's friend. Inparticular embodiments, the relationships a user has with another objectmay affect the weights and/or the ratings of the user's actions withrespect to calculating the coefficient for that object. As an exampleand not by way of limitation, if a user is tagged in first photo, butmerely likes a second photo, social networking system 802 may determinethat the user has a higher coefficient with respect to the first photothan the second photo because having a tagged-in-type relationship withcontent may be assigned a higher weight and/or rating than having alike-type relationship with content. In particular embodiments, socialnetworking system 802 may calculate a coefficient for a first user basedon the relationship one or more second users have with a particularobject. In other words, the connections and coefficients other usershave with an object may affect the first user's coefficient for theobject. As an example and not by way of limitation, if a first user isconnected to or has a high coefficient for one or more second users, andthose second users are connected to or have a high coefficient for aparticular object, social networking system 802 may determine that thefirst user should also have a relatively high coefficient for theparticular object. In particular embodiments, the coefficient may bebased on the degree of separation between particular objects. The lowercoefficient may represent the decreasing likelihood that the first userwill share an interest in content objects of the user that is indirectlyconnected to the first user in the social graph 900. As an example andnot by way of limitation, social-graph entities that are closer in thesocial graph 900 (i.e., fewer degrees of separation) may have a highercoefficient than entities that are further apart in the social graph900.

In particular embodiments, social networking system 802 may calculate acoefficient based on location information. Objects that aregeographically closer to each other may be considered to be morerelated, or of more interest, to each other than more distant objects.In particular embodiments, the coefficient of a user towards aparticular object may be based on the proximity of the object's locationto a current location associated with the user (or the location of aclient system 806 of the user). A first user may be more interested inother users or concepts that are closer to the first user. As an exampleand not by way of limitation, if a user is one mile from an airport andtwo miles from a gas station, social networking system 802 may determinethat the user has a higher coefficient for the airport than the gasstation based on the proximity of the airport to the user.

In particular embodiments, social networking system 802 may performparticular actions with respect to a user based on coefficientinformation. Coefficients may be used to predict whether a user willperform a particular action based on the user's interest in the action.A coefficient may be used when generating or presenting any type ofobjects to a user, such as advertisements, search results, news stories,media, messages, notifications, or other suitable objects. Thecoefficient may also be utilized to rank and order such objects, asappropriate. In this way, social networking system 802 may provideinformation that is relevant to user's interests and currentcircumstances, increasing the likelihood that they will find suchinformation of interest. In particular embodiments, social networkingsystem 802 may generate content based on coefficient information.Content objects may be provided or selected based on coefficientsspecific to a user. As an example and not by way of limitation, thecoefficient may be used to generate media for the user, where the usermay be presented with media for which the user has a high overallcoefficient with respect to the media object. As another example and notby way of limitation, the coefficient may be used to generateadvertisements for the user, where the user may be presented withadvertisements for which the user has a high overall coefficient withrespect to the advertised object. In particular embodiments, socialnetworking system 802 may generate search results based on coefficientinformation. Search results for a particular user may be scored orranked based on the coefficient associated with the search results withrespect to the querying user. As an example and not by way oflimitation, search results corresponding to objects with highercoefficients may be ranked higher on a search-results page than resultscorresponding to objects having lower coefficients.

In particular embodiments, social networking system 802 may calculate acoefficient in response to a request for a coefficient from a particularsystem or process. To predict the likely actions a user may take (or maybe the subject of) in a given situation, any process may request acalculated coefficient for a user. The request may also include a set ofweights to use for various factors used to calculate the coefficient.This request may come from a process running on the online socialnetwork, from a third-party system 808 (e.g., via an API or othercommunication channel), or from another suitable system. In response tothe request, social networking system 802 may calculate the coefficient(or access the coefficient information if it has previously beencalculated and stored). In particular embodiments, social networkingsystem 802 may measure an affinity with respect to a particular process.Different processes (both internal and external to the online socialnetwork) may request a coefficient for a particular object or set ofobjects. Social networking system 802 may provide a measure of affinitythat is relevant to the particular process that requested the measure ofaffinity. In this way, each process receives a measure of affinity thatis tailored for the different context in which the process will use themeasure of affinity.

In connection with social-graph affinity and affinity coefficients,particular embodiments may utilize one or more systems, components,elements, functions, methods, operations, or steps disclosed in U.S.patent application Ser. No. 11/503,093, filed 11 Aug. 2006, U.S. patentapplication Ser. No. 12/977,027, filed 22 Dec. 2010, U.S. patentapplication Ser. No. 12/978,265, filed 23 Dec. 2010, and U.S. patentapplication Ser. No. 13/632,869, field 1 Oct. 2012, each of which isincorporated by reference.

In particular embodiments, one or more of the content objects of theonline social network may be associated with a privacy setting. Theprivacy settings (or “access settings”) for an object may be stored inany suitable manner, such as, for example, in association with theobject, in an index on an authorization server, in another suitablemanner, or any combination thereof. A privacy setting of an object mayspecify how the object (or particular information associated with anobject) can be accessed (e.g., viewed or shared) using the online socialnetwork. Where the privacy settings for an object allow a particularuser to access that object, the object may be described as being“visible” with respect to that user. As an example and not by way oflimitation, a user of the online social network may specify privacysettings for a user-profile page identify a set of users that may accessthe work experience information on the user-profile page, thus excludingother users from accessing the information. In particular embodiments,the privacy settings may specify a “blocked list” of users that shouldnot be allowed to access certain information associated with the object.In other words, the blocked list may specify one or more users orentities for which an object is not visible. As an example and not byway of limitation, a user may specify a set of users that may not accessphotos albums associated with the user, thus excluding those users fromaccessing the photo albums (while also possibly allowing certain usersnot within the set of users to access the photo albums). In particularembodiments, privacy settings may be associated with particularsocial-graph elements. Privacy settings of a social-graph element, suchas a node or an edge, may specify how the social-graph element,information associated with the social-graph element, or content objectsassociated with the social-graph element can be accessed using theonline social network. As an example and not by way of limitation, aparticular concept node 904 corresponding to a particular photo may havea privacy setting specifying that the photo may only be accessed byusers tagged in the photo and their friends. In particular embodiments,privacy settings may allow users to opt in or opt out of having theiractions logged by social networking system 802 or shared with othersystems (e.g., third-party system 808). In particular embodiments, theprivacy settings associated with an object may specify any suitablegranularity of permitted access or denial of access. As an example andnot by way of limitation, access or denial of access may be specifiedfor particular users (e.g., only me, my roommates, and my boss), userswithin a particular degrees-of-separation (e.g., friends, orfriends-of-friends), user groups (e.g., the gaming club, my family),user networks (e.g., employees of particular employers, students oralumni of particular university), all users (“public”), no users(“private”), users of third-party systems 808, particular applications(e.g., third-party applications, external websites), other suitableusers or entities, or any combination thereof. Although this disclosuredescribes using particular privacy settings in a particular manner, thisdisclosure contemplates using any suitable privacy settings in anysuitable manner.

In particular embodiments, one or more servers may beauthorization/privacy servers for enforcing privacy settings. Inresponse to a request from a user (or other entity) for a particularobject stored in a data store, social networking system 802 may send arequest to the data store for the object. The request may identify theuser associated with the request and may only be sent to the user (or aclient system 806 of the user) if the authorization server determinesthat the user is authorized to access the object based on the privacysettings associated with the object. If the requesting user is notauthorized to access the object, the authorization server may preventthe requested object from being retrieved from the data store, or mayprevent the requested object from be sent to the user. In the searchquery context, an object may only be generated as a search result if thequerying user is authorized to access the object. In other words, theobject must have a visibility that is visible to the querying user. Ifthe object has a visibility that is not visible to the user, the objectmay be excluded from the search results. Although this disclosuredescribes enforcing privacy settings in a particular manner, thisdisclosure contemplates enforcing privacy settings in any suitablemanner.

The foregoing specification is described with reference to specificexemplary embodiments thereof. Various embodiments and aspects of thedisclosure are described with reference to details discussed herein, andthe accompanying drawings illustrate the various embodiments. Thedescription above and drawings are illustrative and are not to beconstrued as limiting. Numerous specific details are described toprovide a thorough understanding of various embodiments.

The additional or alternative embodiments may be embodied in otherspecific forms without departing from its spirit or essentialcharacteristics. The described embodiments are to be considered in allrespects only as illustrative and not restrictive. The scope of thedisclosure is, therefore, indicated by the appended claims rather thanby the foregoing description. All changes that come within the meaningand range of equivalency of the claims are to be embraced within theirscope.

What is claimed is:
 1. A method comprising: conducting, by a clientcomputing device associated with a user, a video call capturing aplurality of participants; generating, for each participant of theplurality of participants, an importance score by determining one ormore of whether a participant is moving, whether the participant isspeaking, or a relative location of the participant compared to otherparticipants of the plurality of participants; and customizing the videocall for the user based on importance scores by focusing in on aparticipant with a highest importance score.
 2. The method as recited inclaim 1, further comprising generating affinity coefficientsrepresenting relationship strengths between the user and eachparticipant of the plurality of participants based on networking systeminformation.
 3. The method as recited in claim 2, wherein generating theaffinity coefficients based on the networking system informationcomprising generating the affinity coefficients based on one or more ofsocial networking profile information, social networking activityhistory, or interactions between the user and a given participant. 4.The method as recited in claim 1, wherein focusing on the participantwith the highest importance score comprises applying a highercompression rate to one or more other participants of the plurality ofparticipants.
 5. The method as recited in claim 1, wherein focusing onthe participant with the highest importance score comprises generating adisplay layout by arranging one or more video streams captured by clientdevices participating in the video call so that a video stream of theparticipant with the highest importance score is larger than videostreams of other participants.
 6. The method as recited in claim 1,wherein focusing on the participant with the highest importance scorecomprises: generating a first presentation having a first quality for afirst video stream captured by a first client device for the participantwith the highest importance score; and generating a second presentationhaving a second quality lower than the first quality for a second videostream captured by a second client device for a second participant inthe video call.
 7. The method as recited in claim 1, wherein focusing onthe participant with the highest importance score comprises zooming inon the participant with the highest importance score.
 8. A systemcomprising: at least one computer-readable storage medium; and at leastone processor coupled to the least one computer-readable storage medium,the at least one processor configured to cause the system to: conduct avideo call between a user and a plurality of participants; generate, foreach participant of the plurality of participants, an importance scoreby determining one or more of whether a participant is moving, whetherthe participant is speaking, or a relative location of the participantcompared to other participants of the plurality of participants; andcustomize the video call for the user based on importance scores tofocus on a participant with a highest importance score.
 9. The system asrecited in claim 8, wherein the at least one processor is configured tocause a camera of the system to focus on the participant with thehighest importance score.
 10. The system as recited in claim 9, whereinthe at least one processor is configured to cause the camera of thesystem to pan or tilt to focus on the participant with the highestimportance score.
 11. The system as recited in claim 9, wherein the atleast one processor is configured to cause the camera of the system toswivel to focus on the participant with the highest importance score.12. The system as recited in claim 9, wherein the at least one processoris configured to cause the camera of the system to zoom out to focus onthe participant with the highest importance score by capturing movementof the participant with the highest importance score.
 13. The system asrecited in claim 9, wherein: the camera is located on a first clientdevice associated with the participant with the highest importancescore; and a display of the video call for the user is provided on asecond client device associated with the user.
 14. The system as recitedin claim 13, wherein the first client device and the second clientdevice are remote computer systems linked through a network.
 15. Anon-transitory computer readable medium storing instructions that, whenexecuted by at least one processor, cause the at least one processor toperform operations comprising: conducting a video call between a userand a plurality of participants; generating, for each participant of theplurality of participants, an importance score by determining one ormore of whether a participant is moving, whether the participant isspeaking, or a relative location of the participant compared to otherparticipants of the plurality of participants; and customizing the videocall for the user based on importance scores by focusing in on aparticipant with a highest importance score.
 16. The non-transitorycomputer readable medium as recited in claim 15, wherein generating, foreach participant of the plurality of participants, an importance scorefurther comprises: accessing networking system information correspondingto the user and each participant; and assigning a value to eachnetworking system information factor for each participant.
 17. Thenon-transitory computer readable medium as recited in claim 15, whereinfocusing in on the participant with the highest importance scorecomprises zooming in on the participant with the highest importancescore.
 18. The non-transitory computer readable medium as recited inclaim 15, wherein focusing in on the participant with the highestimportance score comprises zooming out to capture the participant withthe highest importance score.
 19. The non-transitory computer readablemedium as recited in claim 15, wherein focusing in on the participantwith the highest importance score comprises panning or tilting a cameracapturing the participant with the highest importance score.
 20. Thenon-transitory computer readable medium as recited in claim 15, whereinfocusing in on the participant with the highest importance scorecomprises swiveling a camera capturing the participant with the highestimportance score.